Dutta,Ritwick. (2000). Environmental activists' handbook I (3rd.). SIDA.
Cita Chicago (17th ed.)Dutta,Ritwick. Environmental Activists' Handbook I. 3rd. Delhi: SIDA, 2000.
Cita MLA (9th ed.)Dutta,Ritwick. Environmental Activists' Handbook I. 3rd. SIDA, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.