[publisher not identified], [date of publication not identified]
Buku Teks
Lubis, Mochtar, 1922-2004
Pustaka Jaya,
Buku Teks SO
Dennie Sastrapradja
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1994
UI - Skripsi Membership
Adimas Immanuel
PT. Gramedia Pustaka Utama, 2019
Buku Teks SO
Adimas Immanuel
Gramedia Pustaka Utama, 2019
Buku Teks SO