Gaya APA
Principles of Language Learning and Teaching (3rd ed.). (1993).
:
.
Gaya Chicago
Principles of Language Learning and Teaching (3rd ed.).
3rd ed..
:
,
1993.
Text.
Gaya MLA
Principles of Language Learning and Teaching (3rd ed.).
3rd ed..
:
,
1993.
Text.
Gaya Turabian
Principles of Language Learning and Teaching (3rd ed.).
:
,
1993.
Print.