Cita APA (7a ed.)

Snell, F. D., & Biffen, F. M. (1944). Commercial methods of analysis. McGraw-Hill.

Cita Chicago Style (17a ed.)

Snell, Foster Dee, y Frank M. Biffen. Commercial Methods of Analysis. New York: McGraw-Hill, 1944.

Cita MLA (8a ed.)

Snell, Foster Dee, y Frank M. Biffen. Commercial Methods of Analysis. McGraw-Hill, 1944.