Cita APA (7a ed.)

Lundgren, T. D. (1981). Research methods in the social sciences (2nd. ed.). St. Martin�s Press.

Cita Chicago Style (17a ed.)

Lundgren, Terry D. Research Methods in the Social Sciences. 2nd. ed. New York: St. Martin�s Press, 1981.

Cita MLA (8a ed.)

Lundgren, Terry D. Research Methods in the Social Sciences. 2nd. ed. St. Martin�s Press, 1981.