Cita APA (7th ed.)
Labovitz, S., & Hagedorn, R. (1971). Introduction to social research (2nd ed.). McGraw - Hill.
Cita Chicago (17th ed.)
Labovitz, Sanford, i Robert Hagedorn. Introduction to Social Research. 2nd ed. New York: McGraw - Hill, 1971.
Cita MLA (9th ed.)
Labovitz, Sanford, i Robert Hagedorn. Introduction to Social Research. 2nd ed. McGraw - Hill, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.