Piper, P. J., & Krell, R. D. Advances in the understanding and treatment of asthma.
Citazione stile Chigago Style (17a edizione)Piper, Priscilla J., e Robert D. Krell. Advances in the Understanding and Treatment of Asthma.
Citatione MLA (8a ed.)Piper, Priscilla J., e Robert D. Krell. Advances in the Understanding and Treatment of Asthma.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.