Laura, Ronald S.
Falmer Press, 1999
Buku Teks
Gage, N. L.
Houghton Miffiln, 1988
Buku Teks
Hoy, Anita Woolfolk, 1947-, author
Allyn and Bacon, 2004
Buku Teks
edited by Neil J. Salkind
Sage, 2011
Buku Teks
edited by Kathleen M. Cauley and Gina M. Pannozzo
McGraw-Hill, 2013
Buku Teks