APA (7th ed.) Citation

Young, C. W. (1951). The human organism and the world of life (Rev. ed.). Harper.

Chicago Style (17th ed.) Citation

Young, Clarence Whitford. The Human Organism and the World of Life. Rev. ed. New York: Harper, 1951.

MLA (9th ed.) Citation

Young, Clarence Whitford. The Human Organism and the World of Life. Rev. ed. Harper, 1951.