Cummings, J. A. (1818). An introduction to ancient and modern geography: On the plan of Goldsmith and Guy ; comprising rules for projecting maps (6th ed.). Cummings and Hilliard.
Chicago-Zitierstil (17. Ausg.)Cummings, Jacob Abbot. An Introduction to Ancient and Modern Geography: On the Plan of Goldsmith and Guy ; Comprising Rules for Projecting Maps. 6th ed. Boston: Cummings and Hilliard, 1818.
MLA-Zitierstil (9. Ausg.)Cummings, Jacob Abbot. An Introduction to Ancient and Modern Geography: On the Plan of Goldsmith and Guy ; Comprising Rules for Projecting Maps. 6th ed. Cummings and Hilliard, 1818.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.