Terry, George Robert
Learning Systems, 1981
Buku Teks
Duvoisin, Roger C.
Lippincott-Raven, 1996
Buku Teks
Pagano, Michael P.
Jones & Bartlett Learning, 2011
Buku Teks
edited by James M. Metz
Elsevier, 2005
Buku Teks
Beyers, Marjorie
Litle Brown , 1979
Buku Teks