Gaya APA
Proctor, Tony. (2005).
Essentials of marketing research fourth edition (fourth edition).
England:
Pearson Education Limited.
Gaya Chicago
Proctor, Tony.
Essentials of marketing research fourth edition.
fourth edition
England:
Pearson Education Limited,
2005.
MM.
Gaya MLA
Proctor, Tony.
Essentials of marketing research fourth edition.
fourth edition
England:
Pearson Education Limited,
2005.
MM.
Gaya Turabian
Proctor, Tony.
Essentials of marketing research fourth edition.
fourth edition
England:
Pearson Education Limited,
2005.
MM.