James Cook University of North Queensland
James Cook University, 1993
Buku Referensi
Schackelford, James F.
New York : CRC Press, 2000,
Buku Referensi
Shackelford, James F., author
CRC Press, 2001
Buku Referensi
Kececioglu, Dimitri, author
Prentice-Hall, 1991
Buku Referensi
Joanne Kauffman, editor, Kun-Mo Lee, editor
Springer Reference, 2013
Buku Teks