APA Citation

Riyanto, S. (2004). Gateway English for active communication. Pustaka Pelajar.

Chicago Style Citation

Riyanto, Slamet. Gateway English for Active Communication. Pustaka Pelajar, 2004.

MLA Citation

Riyanto, Slamet. Gateway English for Active Communication. Pustaka Pelajar, 2004.

Warning: These citations may not always be 100% accurate.