Cita APA (7a ed.)

Bélisle, M., Roskies, E., & Lévesque, J. (1987). Improving adherence to physical activity. [s.n.].

Cita Chicago Style (17a ed.)

Bélisle, Marc, Ethel Roskies, y Jean-Michel Lévesque. Improving Adherence to Physical Activity. [S.l.]: [s.n.], 1987.

Cita MLA (9a ed.)

Bélisle, Marc, et al. Improving Adherence to Physical Activity. [s.n.], 1987.