एपीए उद्धरण

Hammond, J. H. (1981). The camera obscura: A Chronicle. Bristol: Hilger.

शिकागो स्टाइल उद्धरण

Hammond, John H. The Camera Obscura: A Chronicle. Bristol: Hilger, 1981.

एमएलए उद्धरण

Hammond, John H. The Camera Obscura: A Chronicle. Bristol: Hilger, 1981.