ebrary, Inc, Voelkel, N. F., & MacNee, W. (2008). Chronic obstructive lung diseases (2nd ed.). B C Decker ; McGraw-Hill Education [distributor].
Chicago-viite (17. p.)ebrary, Inc, Norbert F. Voelkel, ja William MacNee. Chronic Obstructive Lung Diseases. 2nd ed. Hamilton, Ont. : Maidenhead: B C Decker ; McGraw-Hill Education [distributor], 2008.
MLA-viite (9. p.)ebrary, Inc, et al. Chronic Obstructive Lung Diseases. 2nd ed. B C Decker ; McGraw-Hill Education [distributor], 2008.
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