Hutauruk, Ganda Hartati, author
Universitas Indonesia, 1983
UI - Skripsi (Membership)
Purcell, Edwin J. (Edwin Joseph), 1901-, author
Erlangga, 1995
Buku Teks
Purcell, Edwin J. (Edwin Joseph), 1901-, author
[publisher not identified], 1999
Buku Teks
Abdul Razak, author
Polimedia Negeri Medan, 2018
Artikel Jurnal
Sri Wulandari Wijaya, author
1995
UI - Tesis (Membership)