Cita APA (7th ed.)
(2003). Agriculture, trade and the environment: The pig sector. OECD.
Cita Chicago (17th ed.)
Agriculture, Trade and the Environment: The Pig Sector. Paris, Cedex, France: OECD, 2003.
Cita MLA (9th ed.)
Agriculture, Trade and the Environment: The Pig Sector. OECD, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.