Dyfyniad APA

Davidson, A. C., & Cooper, C. B. (1989). Response to oral theophylline in severe chronic obstructive airways disease.

Dyfyniad Arddull Chicago

Davidson, A. C., and C. B. Cooper. Response to Oral Theophylline in Severe Chronic Obstructive Airways Disease. 1989.

Dyfyniad MLA

Davidson, A. C., and C. B. Cooper. Response to Oral Theophylline in Severe Chronic Obstructive Airways Disease. 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.