APA (7th ed.) Citation

Sheffield, L. M., & Sheffield, N. C. (1927). Swimming simplified (Rev. and enl. ed.). A. S. Barnes.

Chicago Style (17th ed.) Citation

Sheffield, Lyba M., and Nita C. Sheffield. Swimming Simplified. Rev. and enl. ed. New York: A. S. Barnes, 1927.

MLA (8th ed.) Citation

Sheffield, Lyba M., and Nita C. Sheffield. Swimming Simplified. Rev. and enl. ed. A. S. Barnes, 1927.