APA

Cockcroft D. W., Jokic R., Marciniuk D. D. & Fitzpatrick M. F. (19971006). The current dilemma with spirometric inclusion criteria for asthma drug trials. : Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology.

Chicago

Cockcroft D W, Jokic R, Marciniuk D D and Fitzpatrick M F. 19971006. The current dilemma with spirometric inclusion criteria for asthma drug trials. : Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology.

Harvard

Cockcroft D. W., Jokic R., Marciniuk D. D. and Fitzpatrick M. F. (19971006). The current dilemma with spirometric inclusion criteria for asthma drug trials. : Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology.

MLA

Cockcroft D W, Jokic R, Marciniuk D D and Fitzpatrick M F. The current dilemma with spirometric inclusion criteria for asthma drug trials. : Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology. 19971006.