Academic Press, 1997
Buku Referensi
Academic Press, 1996
Buku Referensi
Academic Press, 1995
Buku Referensi
edited by G.E. Gorman
Library Association Publishing, 2001
Buku Teks SO
edited by G.E. Gorman ; associate editor, Daniel G. Dorner
Facet Publishing , 2004
Buku Teks SO