Cita APA

Hempel, E. H. (1939). The economics of chemical industries. New York: John Wiley & Sons.

Citación estilo Chicago

Hempel, Edward H. The Economics of Chemical Industries. New York: John Wiley & Sons, 1939.

Cita MLA

Hempel, Edward H. The Economics of Chemical Industries. New York: John Wiley & Sons, 1939.