APA (7th ed.) Citation

Riyanto. (2011). 12 Tenses to Master in A day978. Pustaka Pelajar.

Chicago Style (17th ed.) Citation

Riyanto. 12 Tenses to Master in A Day978. Pustaka Pelajar, 2011.

MLA (8th ed.) Citation

Riyanto. 12 Tenses to Master in A Day978. Pustaka Pelajar, 2011.

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