Palen, J. John, author
McGraw-Hill, 1979
Buku Teks
Cohen, Nathan Edward, author
National Ass. of Workker, 1964
Buku Teks
Miller, Robert D.
An Aspen Publication, 1996
Buku Teks
Gorline, Lynne Lesak, author
Mosby , 1982
Buku Teks
by Thomas J. Sullivan ... [and others]
John Wiley & Sons, 1980
Buku Teks