Casslén, B. (1981). Proteinases and proteinase inhibitors in uterine fluid: With special reference to IUD-users. Scandinavian Association of Obstetricians and Gynecologists.
Lua i Stíl Chicago (17ú heag.)Casslén, Bertil. Proteinases and Proteinase Inhibitors in Uterine Fluid: With Special Reference to IUD-users. Lund: Scandinavian Association of Obstetricians and Gynecologists, 1981.
Lua MLA (8ú heag.)Casslén, Bertil. Proteinases and Proteinase Inhibitors in Uterine Fluid: With Special Reference to IUD-users. Scandinavian Association of Obstetricians and Gynecologists, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.