Παραπομπή σε μορφή APA (7η εκδ.)

Osakwe, E. (1994). Geography: Its history, thought and teaching. Fourth Dimension Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Osakwe, Emman. Geography: Its History, Thought and Teaching. Enugu, Nigeria: Fourth Dimension Publishing, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Osakwe, Emman. Geography: Its History, Thought and Teaching. Fourth Dimension Publishing, 1994.