Crofton, J. W., & Douglas, A. (1981). Respiratory diseases. Blackwell Scientific.
Chicago Style aipamenaCrofton, John Wenman, and Andrew Douglas. Respiratory Diseases. Oxford: Blackwell Scientific, 1981.
MLA aipamenaCrofton, John Wenman, and Andrew Douglas. Respiratory Diseases. Blackwell Scientific, 1981.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.