(1978). International Union of Pure and Applied Chemistry. Bulgarian Academy of Science.
Chicago Style (17th ed.) ZitazioaInternational Union of Pure and Applied Chemistry. Sofia: Bulgarian Academy of Science, 1978.
MLA (9th ed.) ZitazioaInternational Union of Pure and Applied Chemistry. Bulgarian Academy of Science, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.