Cita APA

Semple, E. C. 1. (1903). American history and its geographic conditions. Boston: Houghton Mifflin.

Citación estilo Chicago

Semple, Ellen Churchill 1863-1932. American History and Its Geographic Conditions. Boston: Houghton Mifflin, 1903.

Cita MLA

Semple, Ellen Churchill 1863-1932. American History and Its Geographic Conditions. Boston: Houghton Mifflin, 1903.

Precaución: Estas citas no son 100% exactas.