Cita APA (7th ed.)

Yegidis, B. l., & Weinbach, R. W. (1991). Instructor's manual for research methods... Longman.

Cita Chicago (17th ed.)

Yegidis, Bonnie l., i Robert W. Weinbach. Instructor's Manual for Research Methods... New York: Longman, 1991.

Cita MLA (9th ed.)

Yegidis, Bonnie l., i Robert W. Weinbach. Instructor's Manual for Research Methods... Longman, 1991.