Cita APA (7a ed.)
Spellman, F. R. (2009). Geography for nongeographers. Government Institutes.
Cita Chicago Style (17a ed.)
Spellman, Frank R. Geography for Nongeographers. Lanham: Government Institutes, 2009.
Cita MLA (9a ed.)
Spellman, Frank R. Geography for Nongeographers. Government Institutes, 2009.
Precaución: Estas citas no son 100% exactas.