Gaya APA
Cogan, D, G. (1908).
Ophthalmic manifestation of systemic vascular disease (Vol. 3).
Philadelphia:
Saunders Company.
Gaya MLA
Cogan, David, G..
"Ophthalmic manifestation of systemic vascular disease".
Vol. 3
Philadelphia:
Saunders Company,
1908.
Buku.