APA Style

al, E., Sugiarso, S. (1983). Penelitian kultivasi tanaman sonchus arvensis L (laporan penelitian) . Jakarta: Puslitbang Farmasi, Badan Litbangkes.

MLA Style

al, Et., Sugiarso, Sugeng. "Penelitian kultivasi tanaman sonchus arvensis L (laporan penelitian)". Jakarta: Puslitbang Farmasi, Badan Litbangkes, 1983. print.