Cita APA (7th ed.)
Fraenkel, J. R., & Wallen, N. E. (2003). How to design and evaluate research in education (5th ed.). McGraw-Hill Higher Education.
Cita Chicago (17th ed.)
Fraenkel, Jack R., i Norman E. Wallen. How to Design and Evaluate Research in Education. 5th ed. Boston: McGraw-Hill Higher Education, 2003.
Cita MLA (9th ed.)
Fraenkel, Jack R., i Norman E. Wallen. How to Design and Evaluate Research in Education. 5th ed. McGraw-Hill Higher Education, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.