Παραπομπή APA

Johnson, J. B. (1987). Political science research methods. Prentice-Hall of India.

Παραπομπή Chicago Style

Johnson, Janet Buttolph. Political Science Research Methods. New Delhi: Prentice-Hall of India, 1987.

Παραπομπή MLA

Johnson, Janet Buttolph. Political Science Research Methods. Prentice-Hall of India, 1987.