APA-ийн эшлэл(7 дахь хэвлэлт)

Erny, P. (1968). Childhood and cosmos: The social psychology of the black african child. new perspective.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Erny, Pierre. Childhood and Cosmos: The Social Psychology of the Black African Child. New York: new perspective, 1968.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Erny, Pierre. Childhood and Cosmos: The Social Psychology of the Black African Child. new perspective, 1968.