APA (7th ed.) Citation

British Medical Journal & Lock, S. (1985). How to do it (2 ed.). British Medical Association.

Chicago Style (17th ed.) Citation

British Medical Journal and Stephen Lock. How to Do It. 2 ed. London: British Medical Association, 1985.

MLA (8th ed.) Citation

British Medical Journal and Stephen Lock. How to Do It. 2 ed. British Medical Association, 1985.