APA Style

Sc., P, D, I, J, R, M. (1987). language files; material for an introductin to language . Surabaya: advocate publishing group.

MLA Style

Sc., Prof., Dr., Ir., Jacub, Rais,, M.. "language files; material for an introductin to language". Surabaya: advocate publishing group, 1987. Buku PGSD.