Cita APA (7a ed.)

Castro, C. M., & King, A. C. (2002). Telephone-assisted counseling for physical activity. [s.n.].

Cita Chicago Style (17a ed.)

Castro, Cynthia M., y Abby C. King. Telephone-assisted Counseling for Physical Activity. [S.l.]: [s.n.], 2002.

Cita MLA (9a ed.)

Castro, Cynthia M., y Abby C. King. Telephone-assisted Counseling for Physical Activity. [s.n.], 2002.