APA (7th ed.) Citation

(1971). Is there an optimum level of populationn. McGraw-Hill Book Company.

Chicago Style (17th ed.) Citation

Is There an Optimum Level of Populationn. New York: McGraw-Hill Book Company, 1971.

MLA (9th ed.) Citation

Is There an Optimum Level of Populationn. McGraw-Hill Book Company, 1971.