edited by Samuel M. Turner, Karen S. Calhoun, Henry E. Adams
John Wiley & Sons, 1992
Buku Referensi
edited by Charles E. Schaefer and Kevin J. O'Connor
John Wiley & Sons, 1982
Buku Referensi
edited by Robert A. Brown and Joan Roberts Field
PMA Publishing, 1988
Buku Teks
McMullin, Rian E, author
W.W. Norton, 2000
Buku Teks
Joseph L. Wetchler, editor
Routledge, 2011
Buku Teks