Cite
Letter.
MLA
Losek, Joseph D., et al. “Letter.” Pediatric Emergency Care, vol. 9, no. 4, Aug. 1993, p. 223. EBSCOhost, https://doi.org/10.1097/00006565-199308000-00012.
APA
Losek, J. D., Hellmich, T., & Bonadio, W. (1993). Letter. Pediatric Emergency Care, 9(4), 223. https://doi.org/10.1097/00006565-199308000-00012
Chicago
Losek, Joseph D., Thomas Hellmich, and William Bonadio. 1993. “Letter.” Pediatric Emergency Care 9 (4): 223. doi:10.1097/00006565-199308000-00012.