Cummings, J. A. (1817). School atlas to Cummings' Ancient and modern geography (4th ed.). Cummings and Hilliard.
Chicago-Zitierstil (17. Ausg.)Cummings, Jacob Abbot. School Atlas to Cummings' Ancient and Modern Geography. 4th ed. Boston: Cummings and Hilliard, 1817.
MLA-Zitierstil (9. Ausg.)Cummings, Jacob Abbot. School Atlas to Cummings' Ancient and Modern Geography. 4th ed. Cummings and Hilliard, 1817.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.