Fries, I. (1988). Contribution to the study of nosema disease (Nosema apiz Z.) in honey bee (Apis mellifera L.) colonies. Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management.
Lua i Stíl Chicago (17ú heag.)Fries, Ingemar. Contribution to the Study of Nosema Disease (Nosema Apiz Z.) in Honey Bee (Apis Mellifera L.) Colonies. Uppsala: Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management, 1988.
Lua MLA (8ú heag.)Fries, Ingemar. Contribution to the Study of Nosema Disease (Nosema Apiz Z.) in Honey Bee (Apis Mellifera L.) Colonies. Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.