Bradley, Joseph F., author
Holt, Rinehart & Winston, 1957
Buku Teks
Troelstrup, Arch W., author
McGraw-Hill , 1978
Buku Teks
Garman, E. Thomas, author
Houghton Miffiln, 1985
Buku Teks
Kapoor, Jack R., 1937-, author
McGraw-Hill/Irwin, 2004
Buku Teks
Richards, R. Malcolm, author
Scott, Foresman, 1984
Buku Teks