Gaya APA
RIYANTO, Slamet. (2009).
Gateway English for Active Communication .
Yogyakarta:
Pustaka Pelajar.
Gaya Chicago
RIYANTO, Slamet.
Gateway English for Active Communication.
Yogyakarta:
Pustaka Pelajar,
2009.
Text.
Gaya MLA
RIYANTO, Slamet.
Gateway English for Active Communication.
Yogyakarta:
Pustaka Pelajar,
2009.
Text.
Gaya Turabian
RIYANTO, Slamet.
Gateway English for Active Communication.
Yogyakarta:
Pustaka Pelajar,
2009.
Print.