Lucas, A.M.
Australia International Press , 1979
Buku Teks
NCC Publications, 1983
Buku Teks
edited by Edward R. Johnson
The Haworth Press, 1988
Buku Teks
McCaffrey, Stephen C., author
Thomson/West, 2009
Buku Teks
Smith, David Lee, author
John Wiley & Sons, 2011
Buku Teks