Gaya APA
Vockell, Edward L.. (1983).
Educational research / Edward L. Vockell .
:
New York: Macmillan.
Gaya Chicago
Vockell, Edward L..
Educational research / Edward L. Vockell.
:
New York: Macmillan,
1983.
Buku.
Gaya MLA
Vockell, Edward L..
Educational research / Edward L. Vockell.
:
New York: Macmillan,
1983.
Buku.
Gaya Turabian
Vockell, Edward L..
Educational research / Edward L. Vockell.
:
New York: Macmillan,
1983.
Buku.