Cita APA

Welcher, F. J. Standard Methods of Chemical Analysis / Frank J. Welcher (6.). New York : D. Van Nostrand Reinhold.

Citación estilo Chicago

Welcher, Frank J. Standard Methods of Chemical Analysis / Frank J. Welcher. 6. New York : D. Van Nostrand Reinhold.

Cita MLA

Welcher, Frank J. Standard Methods of Chemical Analysis / Frank J. Welcher. 6. New York : D. Van Nostrand Reinhold.