Gaya APA
FRAENKEL, J, R., E., , W, N. (2000).
How to design and evaluate research in education (4th ed.).
Boston:
McGraw-Hill.
Gaya MLA
FRAENKEL, Jack, R.., E., , WALLEN,, Norman.
"How to design and evaluate research in education".
4th ed.
Boston:
McGraw-Hill,
2000.
Buku.