APA

Salk E. A., . (1967). A layman's guide to Negro history. New York: McGraw-Hill.

Chicago

Salk Erwin A, . 1967. A layman's guide to Negro history. New York: McGraw-Hill.

Harvard

Salk E. A., . (1967). A layman's guide to Negro history. New York: McGraw-Hill.

MLA

Salk Erwin A, . A layman's guide to Negro history. New York: McGraw-Hill. 1967.