Gaya APA
Riyanto,Slamet. (2006).
Gateway:English for active communication / Slamet Riyanto (Cet.1V).
Yogyakarta:
Pustaka Pelajar.
Gaya Chicago
Riyanto,Slamet.
Gateway:English for active communication / Slamet Riyanto.
Cet.1V
Yogyakarta:
Pustaka Pelajar,
2006.
Text.
Gaya MLA
Riyanto,Slamet.
Gateway:English for active communication / Slamet Riyanto.
Cet.1V
Yogyakarta:
Pustaka Pelajar,
2006.
Text.
Gaya Turabian
Riyanto,Slamet.
Gateway:English for active communication / Slamet Riyanto.
Cet.1V
Yogyakarta:
Pustaka Pelajar,
2006.
Print.