Phillips, B. S. (1971). Social research: Strategy and tactics (2d ed.). Macmillan.
Cita Chicago (17th ed.)Phillips, Bernard S. Social Research: Strategy and Tactics. 2d ed. New York: Macmillan, 1971.
Cita MLA (8th ed.)Phillips, Bernard S. Social Research: Strategy and Tactics. 2d ed. Macmillan, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.