Cita APA (7a ed.)

(2001). COPD professional.org: For the healthcare professional. Boehringer Ingelheim.

Cita Chicago Style (17a ed.)

COPD Professional.org: For the Healthcare Professional. [S.l.]: Boehringer Ingelheim, 2001.

Cita MLA (9a ed.)

COPD Professional.org: For the Healthcare Professional. Boehringer Ingelheim, 2001.