Παραπομπή σε μορφή APA (7η εκδ.)

Uhlig, H., & Koletzko, S. (2012). Too much hygiene? Current state of knowledge on the etiology of chronic inflammatory bowel disease.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Uhlig, H., και S. Koletzko. Too Much Hygiene? Current State of Knowledge on the Etiology of Chronic Inflammatory Bowel Disease. 2012.

Παραπομπή σε μορφή MLA (9th εκδ.)

Uhlig, H., και S. Koletzko. Too Much Hygiene? Current State of Knowledge on the Etiology of Chronic Inflammatory Bowel Disease. 2012.