Nelly L. Tobing ... [and others]
Departemen Pendidikan dan Kebudayaan. Dirjen Kebudayaan, 1993
Buku Teks
Silaen, Josua Gregory, author
[, Universitas Indonesia], 2014
UI - Skripsi (Membership)
Muhammad Hasan As Syarif, author
Fakultas Teknik Universitas Indonesia, 2019
UI - Skripsi (Membership)
Nan, Ling, author
McGraw-Hill, 1976
Buku Teks
Brogan, Gerald E., author
Dickenson, 1969
Buku Teks