Cita APA (7a ed.)

Valman, H. B., Finlay, H. V. L., & Pearson, J. F. (1982). The first year of life. British Medical Association.

Cita Chicago Style (17a ed.)

Valman, H. B., H. V. L. Finlay, y J. F. Pearson. The First Year of Life. London: British Medical Association, 1982.

Cita MLA (9a ed.)

Valman, H. B., et al. The First Year of Life. British Medical Association, 1982.