APA (7 ম সংস্করণ) উদ্ধৃতি

Nieman, D. G. (1991). Promises to keep: African-Americans and the constitutional order, 1776 to the present. Oxford University.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Nieman, Donald G. Promises to Keep: African-Americans and the Constitutional Order, 1776 to the Present. New York: Oxford University, 1991.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Nieman, Donald G. Promises to Keep: African-Americans and the Constitutional Order, 1776 to the Present. Oxford University, 1991.