Kapoor, Jack R., 1937-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Richards, R. Malcolm, author
Scott, Foresman, 1984
Buku Teks
Unger, Maurice A., author
Allyn and Bacon, 1969
Buku Teks
Garman, E. Thomas, author
Houghton Miffiln, 1985
Buku Teks
Rosefsky, Robert S., author
John Wiley & Sons, 1978
Buku Teks