Παραπομπή APA

Forman, E. (1991). Survey sampling principles. Marcek Dekker.

Παραπομπή Chicago Style

Forman, E.K. Survey Sampling Principles. New York: Marcek Dekker, 1991.

Παραπομπή MLA

Forman, E.K. Survey Sampling Principles. Marcek Dekker, 1991.