Sommer, A. (1982). Field guide to the detection and control of xerophthalmia (2nd ed.). World Health Organization.
Citace podle Chicago (17th ed.)Sommer, Alfred. Field Guide to the Detection and Control of Xerophthalmia. 2nd ed. Geneva: World Health Organization, 1982.
Citace podle MLA (9th ed.)Sommer, Alfred. Field Guide to the Detection and Control of Xerophthalmia. 2nd ed. World Health Organization, 1982.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..