edited by Samuel M. Turner, Karen S. Calhoun, Henry E. Adams
John Wiley & Sons, 1992
Buku Referensi
Dryden, Windy, author
Sage Pub., 2002
Buku Referensi
edited by Charles E. Schaefer and Kevin J. O'Connor
John Wiley & Sons, 1982
Buku Referensi
McMullin, Rian E, author
W.W. Norton, 2000
Buku Teks
Joseph L. Wetchler, editor
Routledge, 2011
Buku Teks