APA (7th ed.) Citation

Boulogne, J., De Baldo, C., & Wilton, L. T. (1978). The making of a gymnast. Hawthorn Books.

Chicago Style (17th ed.) Citation

Boulogne, Jean, Carl De Baldo, and Lynn T. Wilton. The Making of a Gymnast. New York: Hawthorn Books, 1978.

MLA (8th ed.) Citation

Boulogne, Jean, et al. The Making of a Gymnast. Hawthorn Books, 1978.