APA (7. basım) Alıntı

Shaffer, E. H. (1968). The oil import program of the United States. Praeger.

Chicago Style (17. basım) Atıf

Shaffer, Edward H. The Oil Import Program of the United States. London: Praeger, 1968.

MLA (9th ed.) Atıf

Shaffer, Edward H. The Oil Import Program of the United States. Praeger, 1968.