Não informado. (1969). Journal of the International Association for Mathematical Geology. Plenum.
Lua i Stíl Chicago (17ú heag.)Não informado. Journal of the International Association for Mathematical Geology. New York: Plenum, 1969.
Lua MLA (8ú heag.)Não informado. Journal of the International Association for Mathematical Geology. Plenum, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.