Cita APA (7a ed.)

Polopolus, L., & �Alvarez, J. (1991). Marketing sugar and other sweeteners. Elsevier.

Cita Chicago Style (17a ed.)

Polopolus, Leo, y Jos�e �Alvarez. Marketing Sugar and Other Sweeteners. Amsterdam ; New York: Elsevier, 1991.

Cita MLA (8a ed.)

Polopolus, Leo, y Jos�e �Alvarez. Marketing Sugar and Other Sweeteners. Elsevier, 1991.