Gaya APA
Davies, Susan, West, Ricard. (1990).
Pitman Business English 1 .
London:
Pitman Publishing.
Gaya Chicago
Davies, Susan, West, Ricard.
Pitman Business English 1.
London:
Pitman Publishing,
1990.
Text.
Gaya MLA
Davies, Susan, West, Ricard.
Pitman Business English 1.
London:
Pitman Publishing,
1990.
Text.
Gaya Turabian
Davies, Susan, West, Ricard.
Pitman Business English 1.
London:
Pitman Publishing,
1990.
Print.