APA (7th ed.) Citation

Cox, I. W. (1934). Folly of human sterilization. Scientific American, 151, 188.

Chicago Style (17th ed.) Citation

Cox, I. W. "Folly of Human Sterilization." Scientific American 151 (1934): 188.

MLA (9th ed.) Citation

Cox, I. W. "Folly of Human Sterilization." Scientific American, vol. 151, 1934, p. 188.