Gordon, Pamela J.
Berrett-Koehler Publishers, 201
Buku Teks
Lee, Pamela M.
MIT, 2000
Buku Teks
Gordon, Alan
Institute of Risk Management, 1987
Buku Teks
Pantry, Sheila, author
Library Association Publishing, 1996
Buku Teks
Gordon, Leland J.
American Book , 1950
Buku Teks