Lua APA (7ú heag.)
Haycock, A., & Preston, S. (2014). Cotton and Williams' practical gastrointestinal endoscopy: The fundamentals (Seventh edition.). Wiley.
Lua i Stíl Chicago (17ú heag.)
Haycock, Adam, agus Stephen Preston. Cotton and Williams' Practical Gastrointestinal Endoscopy: The Fundamentals. Seventh edition. Chichester, England ; West Sussex, England: Wiley, 2014.
Lua MLA (9ú heag.)
Haycock, Adam, agus Stephen Preston. Cotton and Williams' Practical Gastrointestinal Endoscopy: The Fundamentals. Seventh edition. Wiley, 2014.
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