Penningston, Jean A.T., author
Harper & Row, 1985
Buku Teks
Leung, Albert Y., author
John Wiley & Sons, 1996
Buku Referensi
Leung, Albert Y., author
Wiley, 1996
Buku Referensi
English, Ruth, author
ANZFA, 2000
Buku Teks
Mutiara Hafidzah, author
Universitas Indonesia, 2016
UI - Skripsi (Membership)