Gaya APA
Tull, D, S., Hawkins, D, I. (1976).
Meaning; measurement; and method Marketing research .
Massachusetts:
McMillan Publishing Company.
Gaya MLA
Tull, Donald, S., Hawkins, Del, I.
"Meaning; measurement; and method Marketing research".
Massachusetts:
McMillan Publishing Company,
1976.
Text.