APA

Nachmias D., Nachmias C., . (1981). Research methods in the social sciences. New York: St. Martin's Press.

Chicago

Nachmias David, Nachmias Chava, . 1981. Research methods in the social sciences. New York: St. Martin's Press.

Harvard

Nachmias D., Nachmias C., . (1981). Research methods in the social sciences. New York: St. Martin's Press.

MLA

Nachmias David, Nachmias Chava, . Research methods in the social sciences. New York: St. Martin's Press. 1981.