Gaya APA
Hopkins, T. (2002).
How To Master The Art Of Selling : Menjual Secara Profesional (Cet.2).
Semarang:
Dahara Prize.
Gaya MLA
Hopkins, Tom.
"How To Master The Art Of Selling : Menjual Secara Profesional".
Cet.2
Semarang:
Dahara Prize,
2002.
Text.