Brown, Alvin
Hibbert Printing Company, 1945
Buku Teks
Silverstein, Alvin, author
John Wiley & Sons, 1983
Buku Teks
Lawless, Edward W
Rutgers University Press, 1977
Buku Teks
Nightingale, Virginia, author
Routledge, 1996
Buku Teks
Ward, Colleen A., author
Routledge, 2003
Buku Teks