Dyfyniad APA

Newell, F. W. (1996). Ophthalmology: Principles and concepts (8th ed.). Merriam & Webster.

Dyfyniad Arddull Chicago

Newell, Frank W. Ophthalmology: Principles and Concepts. 8th ed. Sampaloc, Manila: Merriam & Webster, 1996.

Dyfyniad MLA

Newell, Frank W. Ophthalmology: Principles and Concepts. 8th ed. Merriam & Webster, 1996.

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