Cita APA (7th ed.)

Fraenkel, J. R., & Wallen, N. E. (2009). How to design and evaluate research in education (7th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Fraenkel, Jack R., i Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. New York, NY: McGraw-Hill, 2009.

Cita MLA (8th ed.)

Fraenkel, Jack R., i Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. McGraw-Hill, 2009.