Lua APA (7ú heag.)
Worl Veterinary Congresso (24 : 1991 : rio de Janeiro). (1991). Selected proceedings. World Veterinary Association.
Lua i Stíl Chicago (17ú heag.)
Worl Veterinary Congresso (24 : 1991 : rio de Janeiro). Selected Proceedings. Rio de Janeiro: World Veterinary Association, 1991.
Lua MLA (9ú heag.)
Worl Veterinary Congresso (24 : 1991 : rio de Janeiro). Selected Proceedings. World Veterinary Association, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.