Springhouse Corporation, 1997
Buku Referensi
Anderson, Philip O.
McGraw-Hill, 2001
Buku Referensi
Anderson, Philip O., editor
McGraw-Hill, 2002
Buku Referensi
Quigley, Edward J., editor; Norris, June T., editor; Robinson, Jean, editor; Rome, Avery, editor; Jones, Elaine Schott, editor
Intermed Communications, Inc., 1979
Buku Referensi
edited by Shayne Cox Gad
John Wiley & Sons, 2005
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