Coleman, Frank M
University Toronto Press, 1977
Buku Teks
edited by David Dyzenhaus and Thomas Poole
Cambridge University Press, 2012
Buku Teks
Viorst, Milton, author
Avon Book Division, 1963
Buku Teks
Hacker, Andrew
McGraw-Hill, 1973
Buku Teks
550, 1947
Buku Teks