Gaya APA
King, F.W.. (1970).
Modern English Business Letters (9).
London:
Longman Group Limited.
Gaya Chicago
King, F.W..
Modern English Business Letters.
9
London:
Longman Group Limited,
1970.
Text.
Gaya MLA
King, F.W..
Modern English Business Letters.
9
London:
Longman Group Limited,
1970.
Text.
Gaya Turabian
King, F.W..
Modern English Business Letters.
9
London:
Longman Group Limited,
1970.
Print.