Gaya APA
GOWER, Roger. (1993).
Speaking upper - intermediate .
oxford:
English Oxford University Press .
Gaya Chicago
GOWER, Roger.
Speaking upper - intermediate.
oxford:
English Oxford University Press ,
1993.
UMUM.
Gaya MLA
GOWER, Roger.
Speaking upper - intermediate.
oxford:
English Oxford University Press ,
1993.
UMUM.
Gaya Turabian
GOWER, Roger.
Speaking upper - intermediate.
oxford:
English Oxford University Press ,
1993.
UMUM.