Cita APA (7a ed.)

Barnes, P., Singh, H., & Stephens, A. J. H. (1990). A textbook of paediatrics in the tropics and sub-tropics. Macmillan.

Cita Chicago Style (17a ed.)

Barnes, P.M, Harjit Singh, y A. J. H. Stephens. A Textbook of Paediatrics in the Tropics and Sub-tropics. London: Macmillan, 1990.

Cita MLA (9a ed.)

Barnes, P.M, et al. A Textbook of Paediatrics in the Tropics and Sub-tropics. Macmillan, 1990.