APA (7th ed.) Citation

Crofton, J., & Douglas, A. (1969). Respiratory diseases: [by] John Crofton and Andrew Douglas. Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Crofton, John, and Andrew Douglas. Respiratory Diseases: [by] John Crofton and Andrew Douglas. Oxford: Blackwell Scientific Publications, 1969.

MLA (8th ed.) Citation

Crofton, John, and Andrew Douglas. Respiratory Diseases: [by] John Crofton and Andrew Douglas. Blackwell Scientific Publications, 1969.

Warning: These citations may not always be 100% accurate.