Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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