APA

Kaufmann F., . (1944). Methodology of the social sciences. New York: Oxford University Press.

Chicago

Kaufmann Felix, . 1944. Methodology of the social sciences. New York: Oxford University Press.

Harvard

Kaufmann F., . (1944). Methodology of the social sciences. New York: Oxford University Press.

MLA

Kaufmann Felix, . Methodology of the social sciences. New York: Oxford University Press. 1944.