De Cecco, John P.
Prentice-Hall, 1974
Buku Teks
Wang, Qing, 1985-, author
Routledge, 2018
Buku Teks
Stephen N. Elliot [and others]
McGraw-Hill, 2000
Buku Teks
Elliott, Stephen N., author
McGraw-Hill , 2000
Multimedia
Stephen N. Elliot, Thomas R. Kratochwill, Joan Littlefield Cook, John F. Travers, authors
McGraw-Hill Book , 2000
Buku Teks