Gaya APA
Douglas, Susan P.. (1983).
International marketing research .
New Jersey:
Prentice-Hall.
Gaya Chicago
Douglas, Susan P..
International marketing research.
New Jersey:
Prentice-Hall,
1983.
Tesis.
Gaya MLA
Douglas, Susan P..
International marketing research.
New Jersey:
Prentice-Hall,
1983.
Tesis.
Gaya Turabian
Douglas, Susan P..
International marketing research.
New Jersey:
Prentice-Hall,
1983.
Tesis.