Cita APA (7a ed.)
Callen, E. (1968). Plants, Diet and Early Agriculture of Some Cave Dwelling pre-Columbian Mexican Indians. Congreso Internacional de Americanistas.
Cita estilo Chicago (17a ed.)
Callen, E.O. Plants, Diet and Early Agriculture of Some Cave Dwelling Pre-Columbian Mexican Indians. Buenos Aires, Argentina: Congreso Internacional de Americanistas, 1968.
Cita MLA (9a ed.)
Callen, E.O. Plants, Diet and Early Agriculture of Some Cave Dwelling Pre-Columbian Mexican Indians. Congreso Internacional de Americanistas, 1968.
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