APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Sheffield, Lyba M., and Nita C. Sheffield. Swimming Simplified. A.S. Barnes and company, 1927.