Cita APA (7th ed.)

Houghton, B., & Conrey, J. (1978). An evaluation of Medline for the provision of drug information to health authorities. British Library.

Cita Chicago (17th ed.)

Houghton, B., i J. Conrey. An Evaluation of Medline for the Provision of Drug Information to Health Authorities. London: British Library, 1978.

Cita MLA (8th ed.)

Houghton, B., i J. Conrey. An Evaluation of Medline for the Provision of Drug Information to Health Authorities. British Library, 1978.