APA Style

Jamal, Y. et al (2013). Chemical Constituents and Antibacterial Effect of Essential Oil of Javaneese Pepper Leaves (Piper Retrofractum Vahl) . Jakarta: Sekretariat Badan Litbang Kesehatan.

MLA Style

Jamal, Yuliasri. et al. "Chemical Constituents and Antibacterial Effect of Essential Oil of Javaneese Pepper Leaves (Piper Retrofractum Vahl)". Jakarta: Sekretariat Badan Litbang Kesehatan, 2013. Text.