Cita APA (7a ed.)

Black, D., & Thomas, G. P. (1978). Providing for the health services: Proceedings of Section X (General) of the British Association for the Advancement of Science 139th annual meeting, 1977. Croom Helm.

Cita Chicago Style (17a ed.)

Black, Douglas, y G. P. Thomas. Providing for the Health Services: Proceedings of Section X (General) of the British Association for the Advancement of Science 139th Annual Meeting, 1977. London: Croom Helm, 1978.

Cita MLA (9a ed.)

Black, Douglas, y G. P. Thomas. Providing for the Health Services: Proceedings of Section X (General) of the British Association for the Advancement of Science 139th Annual Meeting, 1977. Croom Helm, 1978.