Gaya APA
Riordan, P.
(2011).
Vaughan & Asbury's General Ophthalmology
(
Edisi 18)
.
North America:
McGraw-Hill.
Gaya MLA
Riordan, Paul.
"Vaughan & Asbury's General Ophthalmology".
Edisi 18
North America:
McGraw-Hill,
2011.
Text.