Penggayaan APA
COOPER, Donald R.. (1995).
Business research methods (5th Ed.).
Chicago:
Irwin.
Chicago Style
COOPER, Donald R..
Business research methods.
5th Ed.
Chicago:
Irwin,
1995.
Buku.
MLA Style
COOPER, Donald R..
Business research methods.
5th Ed.
Chicago:
Irwin,
1995.
Buku.
Turabian Style
COOPER, Donald R..
Business research methods.
5th Ed.
Chicago:
Irwin,
1995.
Buku.