Gaya APA
Douglas, Susan P, Craig, C. Samuel. (1983).
International marketing research .
New Jersey:
Prentice Hall.
Gaya Chicago
Douglas, Susan P, Craig, C. Samuel.
International marketing research.
New Jersey:
Prentice Hall,
1983.
Buku.
Gaya MLA
Douglas, Susan P, Craig, C. Samuel.
International marketing research.
New Jersey:
Prentice Hall,
1983.
Buku.
Gaya Turabian
Douglas, Susan P, Craig, C. Samuel.
International marketing research.
New Jersey:
Prentice Hall,
1983.
Buku.