Harnack, C. (1979). Limits of the land. Doubleday and Co.
Cita Chicago Style (17a ed.)Harnack, Curtis. Limits of the Land. New York, Estados Unidos: Doubleday and Co, 1979.
Cita MLA (9a ed.)Harnack, Curtis. Limits of the Land. Doubleday and Co, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
