Radford, K.J., author
Prushin-Hall, 1974
Buku Teks
Babson, Roger W., author
J.B. Lippincott, 1950
Buku Teks
edited by Anthony G. McGrew
Manchester University Press, 1985
Buku Teks
Marimin
Grasindo, 2005
Buku Teks
Alwi Syahri, author
1990
UI - Tesis (Membership)