Gaya APA

Schenk, G, H., Hahn, R, B. (1981). Introduction to analytical chemistry. (1981). : Boston : Allyn and Bacon, Inc.,.

Gaya MLA

Schenk, George, H.., Hahn, Richard, B.. "Introduction to analytical chemistry.". 1981 : Boston : Allyn and Bacon, Inc.,, 1981. Text.