APA (7th ed.) Citation

Pettersen, S. A. (2013). Irritable bowel syndrome. Nutritional and lifestyle risk factors in a Norwegian population. Universitetet i Tromsø.

Chicago Style (17th ed.) Citation

Pettersen, Stian Aleksander. Irritable Bowel Syndrome. Nutritional and Lifestyle Risk Factors in a Norwegian Population. Universitetet i Tromsø, 2013.

MLA (9th ed.) Citation

Pettersen, Stian Aleksander. Irritable Bowel Syndrome. Nutritional and Lifestyle Risk Factors in a Norwegian Population. Universitetet i Tromsø, 2013.

Warning: These citations may not always be 100% accurate.