Gaya APA
Intermediate english course : programmes 1-10. (1979).
London:
The Linguaphone Institute.
Gaya Chicago
Intermediate english course : programmes 1-10.
.
London:
The Linguaphone Institute,
1979.
Text.
Gaya MLA
Intermediate english course : programmes 1-10.
.
London:
The Linguaphone Institute,
1979.
Text.
Gaya Turabian
Intermediate english course : programmes 1-10.
London:
The Linguaphone Institute,
1979.
Print.