Gaya APA

REKSOWARDOJO, I, K. et al (2009). Comparison of diesel engine characteristic using pure coconut oil, pure palm oil, and pure jatropha . Surabaya: Universitas Kristen Petra.

Gaya MLA

REKSOWARDOJO, Iman, K.. et al. "Comparison of diesel engine characteristic using pure coconut oil, pure palm oil, and pure jatropha". Surabaya: Universitas Kristen Petra, 2009. Artikel.