APA Style

Widyantoro, A. et al (1996). Respiratory System and Lung Faal Disturbance in Public Cleaning Service Employee (Gangguan Sistem Pernafasan dan Faal Paru pada Petugas Kebersihan Kota) . : .

MLA Style

Widyantoro, Anto. et al. "Respiratory System and Lung Faal Disturbance in Public Cleaning Service Employee (Gangguan Sistem Pernafasan dan Faal Paru pada Petugas Kebersihan Kota)". : , 1996. Text.