APA
Conference of Latin American Geographers, . (1999). Year Book 1999. Texas: University of Texas.
Chicago
Conference of Latin American Geographers, . 1999. Year Book 1999. Texas: University of Texas.
Harvard
Conference of Latin American Geographers, . (1999). Year Book 1999. Texas: University of Texas.
MLA
Conference of Latin American Geographers, . Year Book 1999. Texas: University of Texas. 1999.
