Cita APA (7th ed.)
Zimdahl, R. L. (2006). Agriculture's ethical horizon. Academic Press.
Cita Chicago (17th ed.)
Zimdahl, Robert L. Agriculture's Ethical Horizon. Amsterdam ; Boston: Academic Press, 2006.
Cita MLA (9th ed.)
Zimdahl, Robert L. Agriculture's Ethical Horizon. Academic Press, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.