edited by. David H. Jonassen
MacMillan Library Reference USA, 1996
Buku Referensi
Hoy, Wayne K., author
McGraw-Hill, 2013
Buku Teks
editor-in-chief, Harold E. Mitzel
Free Press, 1993
Buku Referensi
editor-in-chief, Marvin C. Alkin
MacMillan Library Reference USA, 1992
Buku Referensi
editor-in-chief, Harold E. Mitzel
Free Press, 1993
Buku Referensi