(1992). Encyclopaedia of world great scientists. Anmol.
Chicago Style (17th ed.) ZitazioaEncyclopaedia of World Great Scientists. New Delhi: Anmol, 1992.
MLA (9th ed.) ZitazioaEncyclopaedia of World Great Scientists. Anmol, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.