Gaya APA

Spencer,William, . (1985). Ophthalmic Pathology an Atlas and Textbook Vol.1 (3 nd ed). Philadelphia: W.B Saunders Company.

Gaya MLA

Spencer,William, . "Ophthalmic Pathology an Atlas and Textbook Vol.1". 3 nd ed Philadelphia: W.B Saunders Company, 1985. print.