Penguin, 1958
Koleksi Publik
Forcese, Dennis P., author
McGraw-Hill Ryerson, 1980
Buku Teks
edited by Robert Weaver
Oxford University Press, 1981
Buku Teks
general editor, William Toye
Oxford University Press, 1983
Buku Referensi
Davidhizar, Ruth Elaine
Mosby , 1998
Buku Teks