Gaya APA
Walsh, J, B., Gold, A.
(1989).
Physicians's Desk Reference For Ophthalmology
(
17)
.
Oradell:
.
Gaya MLA
Walsh, Joseph, B.., Gold, Arthur.
"Physicians's Desk Reference For Ophthalmology".
17
Oradell:
,
1989.
Text.