Berkeley, Edmund Callis, author
Reinhold Publishing Corporation, 1962
Buku Teks
Parsons, June, author
Cengage Learning, 2013
Buku Teks
Longkutoy, John J., author
Cendana Mas, 1978
Buku Teks
Morley, Deborah, author
Course Technology Cengage Learning, 2013
Buku Teks
Desmonde, William H.
Prentice-Hall, 1964
Buku Teks