McWhorter, Kathleen T., author
Pearson/Longman, 2007
Buku Teks
Lugton, Robert C.
Prentice-Hall, 1978
Buku Teks
Zhao, Wanxun
Cengage Learning Asia, 2012
Buku Teks
Pangerapan, Meivy Meilan, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2013
UI - Tesis Membership
Grant, Patricia
Prentice-Hall, 1989
Buku Referensi