APA

Hahn R. B., Welcher F. J., . (1968). Inorganic qualitative analysis : a short course for introductory chemistry. New York: Van Nostrnad Reinhold Company.

Chicago

Hahn Richard B, Welcher Frank J, . 1968. Inorganic qualitative analysis : a short course for introductory chemistry. New York: Van Nostrnad Reinhold Company.

Harvard

Hahn R. B., Welcher F. J., . (1968). Inorganic qualitative analysis : a short course for introductory chemistry. New York: Van Nostrnad Reinhold Company.

MLA

Hahn Richard B, Welcher Frank J, . Inorganic qualitative analysis : a short course for introductory chemistry. New York: Van Nostrnad Reinhold Company. 1968.