Gaya APA

Shafer, W, G, [. (1983). A textbook oral pathology (4th. Ed). United States of America: W.B Saunders Company.

Gaya MLA

Shafer, William, G, [et.al]. "A textbook oral pathology". 4th. Ed United States of America: W.B Saunders Company, 1983. Text.