Cita APA (7th ed.)

Mitchell, M., & Jolley, J. (1988). Research design explained. Holt, Reinehart and Winston.

Cita Chicago (17th ed.)

Mitchell, Mark, i Janina Jolley. Research Design Explained. New York: Holt, Reinehart and Winston, 1988.

Cita MLA (9th ed.)

Mitchell, Mark, i Janina Jolley. Research Design Explained. Holt, Reinehart and Winston, 1988.