Gaya APA
Wilberg, Peter, Lewis, Michael. (1990).
Business english an individualised learning programme .
Hove:
LTP.
Gaya Chicago
Wilberg, Peter, Lewis, Michael.
Business english an individualised learning programme.
Hove:
LTP,
1990.
Text.
Gaya MLA
Wilberg, Peter, Lewis, Michael.
Business english an individualised learning programme.
Hove:
LTP,
1990.
Text.
Gaya Turabian
Wilberg, Peter, Lewis, Michael.
Business english an individualised learning programme.
Hove:
LTP,
1990.
Print.