APA (7th ed.) Citation

Loken, N. C., & Willoughby, R. J. (1959). Complete book of gymnastics. Prentice-Hall.

Chicago Style (17th ed.) Citation

Loken, Newton C., and Robert J. Willoughby. Complete Book of Gymnastics. Englewood Cliffs, N. J: Prentice-Hall, 1959.

MLA (9th ed.) Citation

Loken, Newton C., and Robert J. Willoughby. Complete Book of Gymnastics. Prentice-Hall, 1959.