Ienna, T., & McKenzie, D. (1997). The asthmatic athlete: Metabolic and ventilatory responses to exercise with and without pre-exercise medication. International journal of sports medicine, 18(2), S. 142-148. doi:10.1055/s-2007-972610

Ienna, T.M., and D.C McKenzie. "The Asthmatic Athlete: Metabolic and Ventilatory Responses to Exercise With and Without Pre-exercise Medication." International Journal of Sports Medicine 18, no. 2 (1997): S. 142-148.

Ienna, T.M., and D.C McKenzie. "The Asthmatic Athlete: Metabolic and Ventilatory Responses to Exercise With and Without Pre-exercise Medication." International Journal of Sports Medicine 18.2 (1997): S. 142-148.