APA
Fraenkel J. R., Wallen N. E., . (1993). How to design and evaluate research in education. New York: McGraw Hill.
Chicago
Fraenkel Jack R, Wallen Norman E, . 1993. How to design and evaluate research in education. New York: McGraw Hill.
Harvard
Fraenkel J. R., Wallen N. E., . (1993). How to design and evaluate research in education. New York: McGraw Hill.
MLA
Fraenkel Jack R, Wallen Norman E, . How to design and evaluate research in education. New York: McGraw Hill. 1993.