MLA

Mauldin, W. Parker, and Donald S Akers. The Population of Poland. Washington: U.S. Govt. Print. Off., 1954.

APA

Mauldin, W. Parker, & Akers, D. S. (1954). The population of Poland. Washington: U.S. Govt. Print. Off.

Chicago

Mauldin, W. Parker, and Donald S. Akers. The Population of Poland. Washington: U.S. Govt. Print. Off., 1954.