Zródło

Literatura:
„Pica and Amylophagy Are Common among Malagasy Men, Women and Children”; Christopher D. Golden , B. J. Rodolph, Rasolofoniaina, Rakoto Benjamin, Sera L. Young; October 17, 2012
„Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition.”; Chapter 148 Pica; Bruce E. Johnson.