Okoroanyanwu, U. Chemistry and Lithography. SPIE Digital Library.
Chicago Style (17th ed.) ZitazioaOkoroanyanwu, Uzodinma. Chemistry and Lithography. SPIE Digital Library.
MLA (9th ed.) ZitazioaOkoroanyanwu, Uzodinma. Chemistry and Lithography. SPIE Digital Library.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.