Avery, Thomas Eugene, author
McGraw-Hill, 1975
Buku Teks
Camp, William G., author
Delmar, 1997
Buku Teks
McKern, Robert Bruce, author
McGraw-Hill, 1976
Buku Teks
Goodman, Alvin S., author
Prentice-Hall, 1984
Buku Teks
Voich, Dan, author
Ronald Press, 1968
Buku Teks