Rensberger, B. (1998). Progress shortened ancient folk's lives. Today.
Cita Chicago Style (17a ed.)Rensberger, Boyce. "Progress Shortened Ancient Folk's Lives." Today 1998.
Cita MLA (9a ed.)Rensberger, Boyce. "Progress Shortened Ancient Folk's Lives." Today, 1998.
Precaución: Estas citas no son 100% exactas.