APA (7th ed.) Citation

Crofton, J., & Douglas, A. (1975). Respiratory diseases (2d ed.). Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Crofton, John, and Andrew Douglas. Respiratory Diseases. 2d ed. Oxford: Blackwell Scientific Publications, 1975.

MLA (9th ed.) Citation

Crofton, John, and Andrew Douglas. Respiratory Diseases. 2d ed. Blackwell Scientific Publications, 1975.