Gaya APA
Educational research: an introduction. (1983).
New York:
Longman.
Gaya Chicago
Educational research: an introduction.
4th ed..
New York:
Longman,
1983.
Buku.
Gaya MLA
Educational research: an introduction.
4th ed..
New York:
Longman,
1983.
Buku.
Gaya Turabian
Educational research: an introduction.
New York:
Longman,
1983.
Buku.