Παραπομπή APA

Sollers, A. A. (1963). Ours is the earth: Appraising natural resources and conservation. New York: Holt, Rinehart and Winston.

Παραπομπή Chicago Style

Sollers, Allan A. Ours Is the Earth: Appraising Natural Resources and Conservation. New York: Holt, Rinehart and Winston, 1963.

Παραπομπή MLA

Sollers, Allan A. Ours Is the Earth: Appraising Natural Resources and Conservation. New York: Holt, Rinehart and Winston, 1963.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.