APA-ийн эшлэл(7 дахь хэвлэлт)

Cowan, T. (1994). Timelines of african american history: 500 years of black achievement. A roundtable press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Cowan, Tom. Timelines of African American History: 500 Years of Black Achievement. New York: A roundtable press, 1994.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Cowan, Tom. Timelines of African American History: 500 Years of Black Achievement. A roundtable press, 1994.