editor-in-chief, Larry W. Mays
McGraw-Hill, 2000
Buku Referensi
edited by Jack Pinkowski
CRC Press, 2008
Buku Referensi
Doty, Steve, author
CRC Press, Taylor & Francis Group, 2009
Buku Referensi
Penn, Ira A., author
Gower, 1998
Buku Teks
Clark, John R., author
Lewis Publishers, 1996
Buku Referensi