Cita APA (7th ed.)
Karlen, D. L. (2014). Cellulosic energy cropping systems. Wiley.
Cita Chicago (17th ed.)
Karlen, D. L. Cellulosic Energy Cropping Systems. Chichester, England: Wiley, 2014.
Cita MLA (9th ed.)
Karlen, D. L. Cellulosic Energy Cropping Systems. Wiley, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.