Trích dẫn APA

Spears, M., McSharry, C., Chaudhuri, R., Weir, C. J., de Wet, C., & Thomson, N. C. (2013). Smoking in Asthma Is Associated with Elevated Levels of Corticosteroid Resistant Sputum Cytokines—An Exploratory Study. Public Library of Science.

Trích dẫn kiểu Chicago

Spears, Mark, Charles McSharry, Rekha Chaudhuri, Christopher J. Weir, Carl de Wet, và Neil C. Thomson. Smoking in Asthma Is Associated With Elevated Levels of Corticosteroid Resistant Sputum Cytokines—An Exploratory Study. Public Library of Science, 2013.

Trích dẫn MLA

Spears, Mark, et al. Smoking in Asthma Is Associated With Elevated Levels of Corticosteroid Resistant Sputum Cytokines—An Exploratory Study. Public Library of Science, 2013.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.