EBSCOhost http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=572221
OverDrive https://www.overdrive.com/search?q=44737802-E881-41A1-A3B2-46356EEEC534
Excerpt http://excerpts.cdn.overdrive.com/FormatType-410/1590-1/447/378/02/AfricaUnited.epub
Excerpt https://samples.overdrive.com/?crid=44737802-E881-41A1-A3B2-46356EEEC534&.epub-sample.overdrive.com
Image http://images.contentreserve.com/ImageType-100/1590-1/{44737802-E881-41A1-A3B2-46356EEEC534}Img100.jpg

Table of contents http://catdir.loc.gov/catdir/toc/fy0607/2005052325.html
Table of contents http://www.gbv.de/dms/bowker/toc/9780393926361.pdf

Table of contents http://catdir.loc.gov/catdir/enhancements/fy0618/2004053699-t.html
Table of contents http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=013004758&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Book review (H-Net) http://www.h-net.org/reviews/showrev.php?id=11845
Contributor biographical information http://catdir.loc.gov/catdir/enhancements/fy0618/2004053699-b.html
Publisher description http://catdir.loc.gov/catdir/enhancements/fy0618/2004053699-d.html

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

Ebook Library http://public.eblib.com/choice/publicfullrecord.aspx?p=743033
ebrary http://site.ebrary.com/id/10866839
EBSCOhost http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=377763
MyiLibrary http://www.myilibrary.com?id=320126
MyiLibrary, Table of contents http://www.myilibrary.com?id=320126&ref=toc

Publisher description http://catdir.loc.gov/catdir/enhancements/fy0701/99236424-d.html
Book review (H-Net) http://www.h-net.org/reviews/showrev.php?id=4387

Table of contents http://www.gbv.de/dms/bowker/toc/9780883449295.pdf