APA Style

Houghton, A, R., Gray, D. (2010). Chamberlain's symptoms and signs in clinical medicine : an introduction to medical diagnosis (13th). London: Hodder Arnold.

MLA Style

Houghton, Andrew, R.., Gray, David. "Chamberlain's symptoms and signs in clinical medicine : an introduction to medical diagnosis". 13th London: Hodder Arnold, 2010. .