APA Style
Sommer, Barbara, Sommer, Robert. (1991).
A Practical guide to behavioral research .
New York:
Oxford University Press.
Chicago Style
Sommer, Barbara, Sommer, Robert.
A Practical guide to behavioral research.
New York:
Oxford University Press,
1991.
Buku Teks.
MLA Style
Sommer, Barbara, Sommer, Robert.
A Practical guide to behavioral research.
New York:
Oxford University Press,
1991.
Buku Teks.
Turabian Style
Sommer, Barbara, Sommer, Robert.
A Practical guide to behavioral research.
New York:
Oxford University Press,
1991.
Buku Teks.