APA (7th ed.) Citation

Cowley, J. (2008). Sopan Santun. PT Indeks.

Chicago Style (17th ed.) Citation

Cowley, Joy. Sopan Santun. PT Indeks, 2008.

MLA (8th ed.) Citation

Cowley, Joy. Sopan Santun. PT Indeks, 2008.

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