Sinha, P. C. (1998). International encyclopaedia of sustainable development. Anmol Publications.
Cita Chicago (17th ed.)Sinha, P. C. International Encyclopaedia of Sustainable Development. New Delhi: Anmol Publications, 1998.
Cita MLA (8th ed.)Sinha, P. C. International Encyclopaedia of Sustainable Development. Anmol Publications, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.