APA (7th ed.) Citation

COCKCROFT, D. W., DAVIS, B. E., TODD, D. C., & SMYCNIUK, A. J. (2005). Methacholine challenge: Comparison of two methods. Chest, 127(3), 839-844. https://doi.org/10.1378/chest.127.3.839

Chicago Style (17th ed.) Citation

COCKCROFT, Donald W., Beth E. DAVIS, David C. TODD, and Audrey J. SMYCNIUK. "Methacholine Challenge: Comparison of Two Methods." Chest 127, no. 3 (2005): 839-844. https://doi.org/10.1378/chest.127.3.839.

MLA (9th ed.) Citation

COCKCROFT, Donald W., et al. "Methacholine Challenge: Comparison of Two Methods." Chest, vol. 127, no. 3, 2005, pp. 839-844, https://doi.org/10.1378/chest.127.3.839.