American Lung Association. (1994). American Journal of Respiratory and Critical Care Medicine. American Thoracic Society.
Citação do estilo Chicago (17ª ed.)American Lung Association. American Journal of Respiratory and Critical Care Medicine. New York: American Thoracic Society, 1994.
Citação MLA (8ª ed.)American Lung Association. American Journal of Respiratory and Critical Care Medicine. American Thoracic Society, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.