APA استشهاد

Dumbald, E. (1964). The constitution of the United States. Okalahama press.

استشهاد بنمط شيكاغو

Dumbald, Edward. The Constitution of the United States. USA: Okalahama press, 1964.

MLA استشهاد

Dumbald, Edward. The Constitution of the United States. Okalahama press, 1964.