Cita APA (7a ed.)

Hardiker, P., Exton, K., & Barker, M. (1991). Policies and practices in preventive child care. Avebury.

Cita Chicago Style (17a ed.)

Hardiker, Pauline, Kenneth Exton, y Mary Barker. Policies and Practices in Preventive Child Care. Aldershot [u.a.]: Avebury, 1991.

Cita MLA (8a ed.)

Hardiker, Pauline, et al. Policies and Practices in Preventive Child Care. Avebury, 1991.