Consulta en línea
ebrary http://site.ebrary.com/id/10135400
Table of contents http://catdir.loc.gov/catdir/toc/hol052/2004054404.html
Book review (H-Net) http://www.h-net.org/review/hrev-a0e8j7-aa
Contributor biographical information http://catdir.loc.gov/catdir/bios/hol056/2004054404.html

Table of contents http://catdir.loc.gov/catdir/toc/hol051/2003063273.html
Contributor biographical information http://catdir.loc.gov/catdir/bios/hol056/2003063273.html
Publisher description http://catdir.loc.gov/catdir/description/hol053/2003063273.html

Table of contents http://catdir.loc.gov/catdir/toc/hol052/2004044507.html
Table of contents http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015016229&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Contributor biographical information http://catdir.loc.gov/catdir/bios/hol059/2004044507.html
Publisher description http://catdir.loc.gov/catdir/description/hol053/2004044507.html