Cita APA (7th ed.)
Upton, M. (1973). Farm management in Africa: The principles of production and planning. Oxford.
Cita Chicago (17th ed.)
Upton, Martin. Farm Management in Africa: The Principles of Production and Planning. London: Oxford, 1973.
Cita MLA (9th ed.)
Upton, Martin. Farm Management in Africa: The Principles of Production and Planning. Oxford, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.