Citazione APA

Hahn , R. B., & Welcher , F. J. (1968). Inorganic qualitative analysis: A short course for introductpry chemistry. Van nostrand reinhold company.

Stile di citazione Chicago

Hahn , Richard B., e Frank J. Welcher. Inorganic Qualitative Analysis: A Short Course for Introductpry Chemistry. New York: Van nostrand reinhold company, 1968.

Citazione MLA

Hahn , Richard B., e Frank J. Welcher. Inorganic Qualitative Analysis: A Short Course for Introductpry Chemistry. Van nostrand reinhold company, 1968.