Åhrén, T. (1982). Contraceptive vaginal rings: Clinical studies with special reference to gestagenic effects on serum lipoproteins. Uppsala University ; Distributor, Almqvist & Wiksell International.
Lua i Stíl Chicago (17ú heag.)Åhrén, Tom. Contraceptive Vaginal Rings: Clinical Studies with Special Reference to Gestagenic Effects on Serum Lipoproteins. Uppsala : Stockholm, Sweden: Uppsala University ; Distributor, Almqvist & Wiksell International, 1982.
Lua MLA (8ú heag.)Åhrén, Tom. Contraceptive Vaginal Rings: Clinical Studies with Special Reference to Gestagenic Effects on Serum Lipoproteins. Uppsala University ; Distributor, Almqvist & Wiksell International, 1982.
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