Gaya APA

Simanjuntak, E, P. (1980). Pertanggungan wajib/sosial . Yogyakarta: Gajah Mada University Press.

Gaya MLA

Simanjuntak, Emmy, Pangaribuan. "Pertanggungan wajib/sosial". Yogyakarta: Gajah Mada University Press, 1980. Printed Book.