Schmitt, B. D., Hiscock, T., Sydor, A. M., & Schultz, K. (2004). Pediatric telephone advice (Third edition.). Lippincott Williams & Wilkins.

Schmitt, Barton D., Timothy Hiscock, Anne M. Sydor, and Katherine Schultz. Pediatric Telephone Advice. Third edition. Philadelphia, Pennsylvania: Lippincott Williams & Wilkins, 2004.

Schmitt, Barton D., et al. Pediatric Telephone Advice. Third edition. Lippincott Williams & Wilkins, 2004.