Klepper. Why the Raven Calls the Canyon. Texas A&M University Press.
Cita Chicago (17th ed.)Klepper. Why the Raven Calls the Canyon. Texas A&M University Press.
Cita MLA (9th ed.)Klepper. Why the Raven Calls the Canyon. Texas A&M University Press.
Atenció: Aquestes cites poden no estar 100% correctes.