edited by John S. Major
Westview Press, 1986
Buku Teks
edited by Richard C. Bush
Westview Press, 1986
Buku Teks
edited by Anthony J. Kane
Westview Press, 1990
Buku Teks
Spear, Percival, author
The University of Michigan Press, 1961
Buku Teks
Boulder Westview Press 1992,
Buku Teks