Gaya APA

Snell, F, D., Snell, C, T. (1959). Colorimetric Methods of Analysis: Including Some Turbidimetric and Nephelometric Methods (3rd.ed). New Jersey: D. Van Nostrand.

Gaya MLA

Snell, Foster, Dee., Snell, Cornelia, T. "Colorimetric Methods of Analysis: Including Some Turbidimetric and Nephelometric Methods". 3rd.ed New Jersey: D. Van Nostrand, 1959. Text.