Penggayaan APA
Geffner. (2007).
How to write business letters (4).
New York:
Barron\'s.
Chicago Style
Geffner.
How to write business letters.
4
New York:
Barron\'s,
2007.
Text.
MLA Style
Geffner.
How to write business letters.
4
New York:
Barron\'s,
2007.
Text.
Turabian Style
Geffner.
How to write business letters.
4
New York:
Barron\'s,
2007.
Print.