Brown, Frederick G., author
Dryden Press, 1970
Buku Teks
Stanley, Julian C., author
Prentice-Hall, 1972
Buku Teks
Leighton, Jacqueline P., author
Oxford University Press, 2017
eBooks
Nunnally, Jum C., author
McGraw-Hill, 1972
Buku Teks
Taylor, Ronald L., author
Allyn and Bacon, 2003
Buku Teks