Cita APA (7a ed.)

Ellfeldt, L., & Lowman, C. L. (1973). Exercises for the mature adult. Thomas.

Cita Chicago Style (17a ed.)

Ellfeldt, Lois, y Charles Leroy Lowman. Exercises for the Mature Adult. Springfiled, Ill: Thomas, 1973.

Cita MLA (9a ed.)

Ellfeldt, Lois, y Charles Leroy Lowman. Exercises for the Mature Adult. Thomas, 1973.