Gaya APA

Ewing, G, W., }, M, C, {, E, A. (1985). Instrumental Methods Of Chemical Analysis (5 ed). United States of America: McGraw Hil Book Company.

Gaya MLA

Ewing, Galen, W.., }, Mery, Castle, {, Et, Al. "Instrumental Methods Of Chemical Analysis". 5 ed United States of America: McGraw Hil Book Company, 1985. Text.