Barr, R. G. (1990). The "Colic" Enigma: Prolonged Episodes of a Normal Predisposition to Cry. Infant Mental Health Journal, 11(4), 340. https://doi.org/10.1002/1097-0355(199024)11:4<340::AID-IMHJ2280110405>3.0.CO;2-9
Chicago Style (17th ed.) CitationBarr, Ronald G. "The "Colic" Enigma: Prolonged Episodes of a Normal Predisposition to Cry." Infant Mental Health Journal 11, no. 4 (1990): 340. https://doi.org/10.1002/1097-0355(199024)11:4<340::AID-IMHJ2280110405>3.0.CO;2-9.
MLA (9th ed.) CitationBarr, Ronald G. "The "Colic" Enigma: Prolonged Episodes of a Normal Predisposition to Cry." Infant Mental Health Journal, vol. 11, no. 4, 1990, p. 340, https://doi.org/10.1002/1097-0355(199024)11:4<340::AID-IMHJ2280110405>3.0.CO;2-9.
Warning: These citations may not always be 100% accurate.