Cita APA

Sinclair, D. J., & Ingram, C. G. (1980). Exercise training in chronic bronchitis.

Citación estilo Chicago

Sinclair, D J., y C G. Ingram. Exercise Training in Chronic Bronchitis. 1980.

Cita MLA

Sinclair, D J., y C G. Ingram. Exercise Training in Chronic Bronchitis. 1980.