Bennett, Lerone
Penguin Books, 1969
Buku Teks
White, Walter
The Viking Press, 1956
Buku Teks
Brink, William
Simon and Schuster, 1964
Buku Teks
Brown, Austin Channing, author
Convergent Books, 2018
Buku Teks
Pasaribu, Ruth Vania Christine , author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
UI - Skripsi (Membership)