Boehm, R. G. (2002). Geography the World and it's People volume 1. McGraw - HillCompanies, Inc.
Chicago ZitierstilBoehm, Richard G. Geography the World and It's People Volume 1. McGraw - HillCompanies, Inc, 2002.
MLA ZitierstilBoehm, Richard G. Geography the World and It's People Volume 1. McGraw - HillCompanies, Inc, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.