APA (7th ed.) Citation

Riyanto, S. (2011). Twelve tenses to master in a day with examples. Pustaka Pelajar.

Chicago Style (17th ed.) Citation

Riyanto, Slamet. Twelve Tenses to Master in a Day with Examples. Pustaka Pelajar, 2011.

MLA (8th ed.) Citation

Riyanto, Slamet. Twelve Tenses to Master in a Day with Examples. Pustaka Pelajar, 2011.

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