APA (7th ed.) Citation

K, M., B, S., & D, C. (2015). Does this child really have a penicillin allergy? Irish medical journal, 108(4), 103.

Chicago Style (17th ed.) Citation

K, Murphy, Scanlan B, and Coghlan D. "Does This Child Really Have a Penicillin Allergy?" Irish Medical Journal 108, no. 4 (2015): 103.

MLA (9th ed.) Citation

K, Murphy, et al. "Does This Child Really Have a Penicillin Allergy?" Irish Medical Journal, vol. 108, no. 4, 2015, p. 103.