Epps, Garrett, author
Oxford Univesity Press, 2013
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1947
Buku Teks
McCamy, James L., author
Alfred A. Knopf, 1952
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1981
Buku Teks
Ferguson, John H., author
McGraw-Hill, 1981
Buku Teks