APA citiranje

Shefrin, A. E., & Goldman, R. D. (2009). Use of over-the-counter cough and cold medications in children. College of Family Physicians of Canada.

Citação norma Chicago

Shefrin, Allan E., and Ran D. Goldman. Use of Over-the-counter Cough and Cold Medications in Children. College of Family Physicians of Canada, 2009.

MLA citiranje

Shefrin, Allan E., and Ran D. Goldman. Use of Over-the-counter Cough and Cold Medications in Children. College of Family Physicians of Canada, 2009.