Gaya APA
Riyanto, Slamet. (2005).
Gateway english for active communication : Slamet Riyanto .
Yogyakarta:
Pustaka Pelajar.
Gaya Chicago
Riyanto, Slamet.
Gateway english for active communication : Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2005.
Text.
Gaya MLA
Riyanto, Slamet.
Gateway english for active communication : Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2005.
Text.
Gaya Turabian
Riyanto, Slamet.
Gateway english for active communication : Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2005.
Print.