Não informado. (1974). American cartographer. American Congress on Surveying and Mapping.
Chicago-Zitierstil (17. Ausg.)Não informado. American Cartographer. Washington: American Congress on Surveying and Mapping, 1974.
MLA-Zitierstil (8. Ausg.)Não informado. American Cartographer. American Congress on Surveying and Mapping, 1974.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.