Cita APA (7th ed.)

Alvarez, R. C. (2007). Take two for biofuels. (article). 2 p. 22+ Jan 13.

Cita Chicago (17th ed.)

Alvarez, Ramiro C. Take Two for Biofuels. (article). v.99: 2 p. 22+ Jan 13, 2007.

Cita MLA (9th ed.)

Alvarez, Ramiro C. Take Two for Biofuels. (article). 2 p. 22+ Jan 13, 2007.