Perlick, Walter W., author
Richard D. Irwin, 1981
Buku Teks
Weston, J. Fred (John Fred), 1916-, author
Richard D. Irwin , 1982
Buku Teks
Barnouw, Victor, author
Learning Syatems Company, 1973
Buku Teks
Simpson, Peter, author
Chapman and Hall, 1994
Buku Teks
Martin, E. Wainright, author
Learning System Company, 1969
Buku Teks