APA Style

al, E., Alimusa, D. (1992). Penelitian clinical trial of DPT heat-stable vaccine . Jakarta: Puslitbang Pemberantasan Penyakit, Badan Litbangkes.

MLA Style

al, Et., Alimusa, Dahlan. "Penelitian clinical trial of DPT heat-stable vaccine". Jakarta: Puslitbang Pemberantasan Penyakit, Badan Litbangkes, 1992. print.