Cita APA (7th ed.)

Burns, R. B. (2000). Introduction to research methods (4th ed.). Sage.

Cita Chicago (17th ed.)

Burns, Robert B. Introduction to Research Methods. 4th ed. London: Sage, 2000.

Cita MLA (9th ed.)

Burns, Robert B. Introduction to Research Methods. 4th ed. Sage, 2000.