Moran, Robert D., author
Moran Associates, 1992
Buku Teks
Purnell, Larry D., author
F.A. Davis, 2005
Buku Teks
Donald L. Zimmerman and Denise G. Osborn-Harrison, editors
NY Springer Publishing Company, 2017
Buku Teks
edited, Sharon A. Shueman, Warwick G. Troy and Samuel L. Mayhugh
Charles C. Thomas, 1994
Buku Teks
Youngkin, Ellis Quinn, author
Appleton & Lange , 1998
Buku Teks