APA (7th ed.) Citation

Harahap, Z., & Wang, T. C. (2008). Sketsa pensil. Salemba Empat.

Chicago Style (17th ed.) Citation

Harahap, Zulkifli, and Thomas C. Wang. Sketsa Pensil. Salemba Empat, 2008.

MLA (8th ed.) Citation

Harahap, Zulkifli, and Thomas C. Wang. Sketsa Pensil. Salemba Empat, 2008.

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