Olagunju, Tosin Samson (2020). “Scollon and Scollon (2001) Model of Politeness” in Politeness Conccepts, Models and Theories (eds) Akinwotu, S.A. et al.. Published by Pragmatics Association of Nigeria. pp 57-64.

Olagunju, Tosin Samson (2020). “Aspect of Borrowing in the Morphological Processes of Ipe Language” pp 76-89... Mubi Journal of Languages Adamawa State University, Mubi

Olagunju, Tosin Samson & Ezeoka, Lucymario E. (2020). “A Stylistic Study of Chigozie Obioma’s The Fishermen” in Trends in African Issues in Minority Languages and Language Development Studies in Nigeria: A Festschrift for Andrew Haruna (eds) Adeniyi, H., Ibileye, G.S. & Abdulmalik, N. Lagos.pp 139-150.. Free Enterprise Publishers.

Olagunju, Tosin Samson & Sani, Salamatu (2018). “Effect of English Studies in Nigeria on the Indigenous Languages” in Journal of Research and Developments in Arts and Social Sciences . Volume 3. pp 240-261. Published by Faculty of Arts and Social Sciences, Federal University Lokoja

Olagunju, Tosin Samson (2018). “Towards the Translation of Selected E ku Greeting Situations in Yoruba Language” in Trends in African Linguistics and Language Development: A Festschrift for Ismail Junaidu (eds) . pp 319-326.. Adeniyi, H., Ken-Maduako, I. and Amadi, P.I. Lagos: Free Enterprise Publishers

Olagunju, Tosin Samson (2017). “Aspects of Affixation in the Morphological Processes of the Yoruba Language” Published in Polacjelf Journal of the Departments of English, Linguistics and French Nigeria Police Academy, Wudil Vol 2, No 1, April 2017. pp 102-113.. Tunlad Publishing Company.

Olagunju, Tosin Samson (2017). “Aspects of Affixation in the Morphological Processes of the Yoruba Language” Published in Polacjelf Journal of the Departments of English, Linguistics and French Nigeria Police Academy, Wudil Vol 2, No 1, April 2017.pp 102-113.. Tunlad Publishing Company.

Olagunju, Tosin Samson & Ofuokwu Dili (2017). “Applied Linguistics is Linguistics Applied to Mankind” in Work in Progress . pp 232-243.. Published by Department of English and Literary Studies, Ahmadu Bello University, Zaria

Olagunju, Tosin Samson (2016). A Critical Discourse Analysis of Language Interactions among Free Readers at Newspapers Stand in Kaduna Metropolis” A Chapter in Linguistics, Language and Literature: A Festschrift for Professor Gbenga Solomon Ibileye (eds) Ayodabo et al. Published by Department of English and Literary Studies, Federal University Lokoja, Lokoja. pp 101-109.

Olagunju, Tosin Samson (2015). “Understanding English for Specific Purposes (ESP)” A Chapter in Language and Linguistics: Perspectives from Nigeria Vol 3. Published by Department of English and Drama, Kaduna State University, Kaduna.

Olagunju, Tosin Samson, Ibileye, Gbenga Solomon & Abaya, Angulu Samson (2014). A Critical Discourse Analysis of Soldiers-Corps Members Conversation on NYSC Camp. Published in KADA Journal of Liberal Arts Faculty of Arts, Kaduna State University, Kaduna. Vol 8 No 1, pp 38-53.

Olagunju, Tosin Samson (2014). Language Interaction among Soldiers and Corps-Members on NYSC Camp A. Book Published in Germany: Scholar’s Press.