APA Style
KING, F.W.. (1986).
English Busines Letters .
Singapore:
Longman.
Chicago Style
KING, F.W..
English Busines Letters.
Singapore:
Longman,
1986.
Text.
MLA Style
KING, F.W..
English Busines Letters.
Singapore:
Longman,
1986.
Text.
Turabian Style
KING, F.W..
English Busines Letters.
Singapore:
Longman,
1986.
Print.