Gaya APA
Russell, Frederic A., Buskirk, Richard H., Beach, Frank H.. (1980).
Selling principles and practices (5th ed).
Singapore:
McGraw-Hill.
Gaya Chicago
Russell, Frederic A., Buskirk, Richard H., Beach, Frank H..
Selling principles and practices.
5th ed
Singapore:
McGraw-Hill,
1980.
Text.
Gaya MLA
Russell, Frederic A., Buskirk, Richard H., Beach, Frank H..
Selling principles and practices.
5th ed
Singapore:
McGraw-Hill,
1980.
Text.
Gaya Turabian
Russell, Frederic A., Buskirk, Richard H., Beach, Frank H..
Selling principles and practices.
5th ed
Singapore:
McGraw-Hill,
1980.
Print.