APA引文

Sommers, J. W. (1965). Bibliography of African geography, 1940-1964. s. n.].

Chicago Style (17th ed.) Citation

Sommers, John W. Bibliography of African Geography, 1940-1964. [Hanover, N. H: s. n.], 1965.

MLA引文

Sommers, John W. Bibliography of African Geography, 1940-1964. s. n.], 1965.

警告：這些引文格式不一定是100％准確.