APA način citiranja

Gomollón, F., Gisbert, J. P., & Gassull, M. Á. (2008). Crohnology: A tale of time and times and inflammatory bowel diseases. The WJG Press and Baishideng.

Čikaški stil citiranja

Gomollón, Fernando, Javier P. Gisbert, i Miquel Ángel Gassull. Crohnology: A Tale of Time and Times and Inflammatory Bowel Diseases. The WJG Press and Baishideng, 2008.

MLA način citiranja

Gomollón, Fernando, Javier P. Gisbert, i Miquel Ángel Gassull. Crohnology: A Tale of Time and Times and Inflammatory Bowel Diseases. The WJG Press and Baishideng, 2008.