Abdullah Siddik, author
Universiti Malaya, 1975
Buku Teks
Della Kartika Sari, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)
Farrar, Harry, author
The Donnington Press, 1970
Buku Teks
Smith, Kenneth, author
Pitman, 1975
Buku Teks
Soe, Myint, author
Quins PTE, 1977
Buku Teks