APA Style

Nugraha, T., Sunardi, D. (2010). Energi Bio Biomassa, Biofuel, Biodiesel dan Biogas (1st edition). Jakarta 12160, Indonesia: PT. Pelangi Ilmu Nusantara.

MLA Style

Nugraha, Tutun., Sunardi, Didik. "Energi Bio Biomassa, Biofuel, Biodiesel dan Biogas". 1st edition Jakarta 12160, Indonesia: PT. Pelangi Ilmu Nusantara, 2010. Book.