APA (7th ed.) Citation

Riyanto, S. (2009). Speak English Please. Pustaka Pelajar.

Chicago Style (17th ed.) Citation

Riyanto, Slamet. Speak English Please. Pustaka Pelajar, 2009.

MLA (8th ed.) Citation

Riyanto, Slamet. Speak English Please. Pustaka Pelajar, 2009.

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