Levy, R. L., & Tilburg, M. A. v. Functional Abdominal Pain in Childhood: Background Studies and Recent Research Trends. Wiley.
Chicago Style (17th ed.) CitationLevy, Rona L., and Miranda AL van Tilburg. Functional Abdominal Pain in Childhood: Background Studies and Recent Research Trends. Wiley.
MLA (9th ed.) CitationLevy, Rona L., and Miranda AL van Tilburg. Functional Abdominal Pain in Childhood: Background Studies and Recent Research Trends. Wiley.
Warning: These citations may not always be 100% accurate.