Harte, J., & Socolow, R. H. (1971). Patient earth. Holt, Rinehart and Winston.
Chicago Style aipamenaHarte, John, and Robert H. Socolow. Patient Earth. New York,: Holt, Rinehart and Winston, 1971.
MLA aipamenaHarte, John, and Robert H. Socolow. Patient Earth. Holt, Rinehart and Winston, 1971.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.