APA (7th ed.) Citation

Friedmann, L. W., Galton, L., & Stonehill, J. (1973). Freedom from backaches. Pocket-books.

Chicago Style (17th ed.) Citation

Friedmann, Lawrence W., Lawrence Galton, and Joseph Stonehill. Freedom from Backaches. New York: Pocket-books, 1973.

MLA (9th ed.) Citation

Friedmann, Lawrence W., et al. Freedom from Backaches. Pocket-books, 1973.