Gaya APA
Leterman, Elmer G.. (1970).
Sales and Sales Management .
New York:
Alexander Hamilton Institute.
Gaya Chicago
Leterman, Elmer G..
Sales and Sales Management.
New York:
Alexander Hamilton Institute,
1970.
.
Gaya MLA
Leterman, Elmer G..
Sales and Sales Management.
New York:
Alexander Hamilton Institute,
1970.
.
Gaya Turabian
Leterman, Elmer G..
Sales and Sales Management.
New York:
Alexander Hamilton Institute,
1970.
.