APA (7th ed.) Citation

Owen, O. S. (1971). Natural resource conservation: An ecological approach. The Macmillan Company.

Chicago Style (17th ed.) Citation

Owen, Oliver S. Natural Resource Conservation: An Ecological Approach. Nueva York: The Macmillan Company, 1971.

MLA (9th ed.) Citation

Owen, Oliver S. Natural Resource Conservation: An Ecological Approach. The Macmillan Company, 1971.