APA

Grayson M., . (1979). Diseases of the cornea. St. Louis: Mosby.

Chicago

Grayson Merrill, . 1979. Diseases of the cornea. St. Louis: Mosby.

Harvard

Grayson M., . (1979). Diseases of the cornea. St. Louis: Mosby.

MLA

Grayson Merrill, . Diseases of the cornea. St. Louis: Mosby. 1979.