Penggayaan APA
HARVEY, Christine. (1989).
The secrets of the world's top sales performers .
London:
Business Books.
Chicago Style
HARVEY, Christine.
The secrets of the world's top sales performers .
London:
Business Books,
1989.
Buku.
MLA Style
HARVEY, Christine.
The secrets of the world's top sales performers .
London:
Business Books,
1989.
Buku.
Turabian Style
HARVEY, Christine.
The secrets of the world's top sales performers .
London:
Business Books,
1989.
Buku.