Martyn, Howe, author
Lexington Books, 1972
Buku Teks
McKern, Robert Bruce, author
McGraw-Hill, 1976
Buku Teks
Eiteman, David K., author
Pearson, 2001
Buku Teks
Nehr, Lee Charles, author
International Textbook, 1967
Buku Teks
Nehr, Lee Charles, author
Intext Educational, 1972
Buku Teks