APA Style
Riyanto, Slamet. (2004).
Gateway english for active communication / Slamet Riyanto .
Yogyakarta:
Pustaka Pelajar.
Chicago Style
Riyanto, Slamet.
Gateway english for active communication / Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2004.
BCF TBI.
MLA Style
Riyanto, Slamet.
Gateway english for active communication / Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2004.
BCF TBI.
Turabian Style
Riyanto, Slamet.
Gateway english for active communication / Slamet Riyanto.
Yogyakarta:
Pustaka Pelajar,
2004.
BCF TBI.