Cita APA

Balfour-Lynn, I. (1999). Difficult asthma: Beyond the guidelines. BMJ Group.

Chicago Style Citation

Balfour-Lynn, I. Difficult Asthma: Beyond The guidelines. BMJ Group, 1999.

Cita MLA

Balfour-Lynn, I. Difficult Asthma: Beyond The guidelines. BMJ Group, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.