Gaya APA

Inc., M. (1971). Encyclopedia of science and technology. Volume 7. Ice Iyt (1971). : New-York : McGraw-Hill Book. Co.,.

Gaya MLA

Inc., McGraw-Hill. "Encyclopedia of science and technology. Volume 7. Ice Iyt". 1971 : New-York : McGraw-Hill Book. Co.,, 1971. Text.