APA (7th ed.) Citation

Ferris, J. D. (2001). Essential medical ophthalmology: A problem oriented approach. Butterworth Heinemann.

Chicago Style (17th ed.) Citation

Ferris, John D. Essential Medical Ophthalmology: A Problem Oriented Approach. Oxford ; Boston: Butterworth Heinemann, 2001.

MLA (9th ed.) Citation

Ferris, John D. Essential Medical Ophthalmology: A Problem Oriented Approach. Butterworth Heinemann, 2001.