APA (7th ed.) Citation

Keighley, M. R. B., & Dykes, P. W. (1981). Gastrointestinal haemorrhage. Wright PSG.

Chicago Style (17th ed.) Citation

Keighley, M. R. B., and Peter W. Dykes. Gastrointestinal Haemorrhage. Bristol [Avon] ; Boston: Wright PSG, 1981.

MLA (9th ed.) Citation

Keighley, M. R. B., and Peter W. Dykes. Gastrointestinal Haemorrhage. Wright PSG, 1981.