APA Style

Perdana, R, W. et al (2012). Welding Fumes Exposure, Body Mass Index and Duration of Smoking Decrease Physical Fitness among Welders . Jakarta: Sekretariat Badan Litbangkes.

MLA Style

Perdana, Rudy, Wahyu. et al. "Welding Fumes Exposure, Body Mass Index and Duration of Smoking Decrease Physical Fitness among Welders". Jakarta: Sekretariat Badan Litbangkes, 2012. Text.