APA (7th ed.) Citation

Hartanto, J. S. D. ABC English Grammar. Indah.

Chicago Style (17th ed.) Citation

Hartanto, John S. Dkk. ABC English Grammar. Indah.

MLA (8th ed.) Citation

Hartanto, John S. Dkk. ABC English Grammar. Indah.

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