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Helander HF، Fändriks L (يونيو 2014). "Surface area of the digestive tract - revisited". Scandinavian Journal of Gastroenterology. ج. 49 ع. 6: 681–9. DOI:10.3109/00365521.2014.898326. PMID:24694282.
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Slomianka L. "Blue Histology - Gastrointestinal Tract". School of Anatomy and Human Biology. The University of Western Australia. مؤرشف من الأصل في 2020-03-07. اطلع عليه بتاريخ 2017-01-30.