APA
Claessen A., Stephens D. j. a. & Ayot H. O. (. (19). Language education resource book. Nairobi: Kenyatta University.
Chicago
Claessen A, Stephens D joint author and Ayot H O (ed). 19. Language education resource book. Nairobi: Kenyatta University.
Harvard
Claessen A., Stephens D. j. a. and Ayot H. O. (. (19). Language education resource book. Nairobi: Kenyatta University.
MLA
Claessen A, Stephens D joint author and Ayot H O (ed). Language education resource book. Nairobi: Kenyatta University. 19.