APA Style
Gower, Roger. (1987).
Speaking upper-intermediate .
:
Oxford University.
Chicago Style
Gower, Roger.
Speaking upper-intermediate.
:
Oxford University,
1987.
Text.
MLA Style
Gower, Roger.
Speaking upper-intermediate.
:
Oxford University,
1987.
Text.
Turabian Style
Gower, Roger.
Speaking upper-intermediate.
:
Oxford University,
1987.
Print.