APA

Woolcock A. J., Peat J. K., Keena V., Smith D., Molloy C., Simpson A., Middleton P., Vallance P., Alpers M. & Green W. (19891218). Asthma and chronic airflow limitation in the highlands of Papua New Guinea: low prevalence of asthma in the Asaro Valley. : The European respiratory journal.

Chicago

Woolcock A J, Peat J K, Keena V, Smith D, Molloy C, Simpson A, Middleton P, Vallance P, Alpers M and Green W. 19891218. Asthma and chronic airflow limitation in the highlands of Papua New Guinea: low prevalence of asthma in the Asaro Valley. : The European respiratory journal.

Harvard

Woolcock A. J., Peat J. K., Keena V., Smith D., Molloy C., Simpson A., Middleton P., Vallance P., Alpers M. and Green W. (19891218). Asthma and chronic airflow limitation in the highlands of Papua New Guinea: low prevalence of asthma in the Asaro Valley. : The European respiratory journal.

MLA

Woolcock A J, Peat J K, Keena V, Smith D, Molloy C, Simpson A, Middleton P, Vallance P, Alpers M and Green W. Asthma and chronic airflow limitation in the highlands of Papua New Guinea: low prevalence of asthma in the Asaro Valley. : The European respiratory journal. 19891218.