Cita APA (7a ed.)
Allen, N. B. (1918). Geographical and industrial studies. South America. Ginn and company.
Cita Chicago Style (17a ed.)
Allen, Nellie Burnham. Geographical and Industrial Studies. South America. Boston, New York: Ginn and company, 1918.
Cita MLA (9a ed.)
Allen, Nellie Burnham. Geographical and Industrial Studies. South America. Ginn and company, 1918.
Precaución: Estas citas no son 100% exactas.