Cita APA (7th ed.)

Khuda, Z. R. M. M. (2001). Environmental Degradation: Challenges of the 21st Century. Environmental Survey and Research Unit.

Cita Chicago (17th ed.)

Khuda, Zinatunnessa R. M. M. Environmental Degradation: Challenges of the 21st Century. Dhaka: Environmental Survey and Research Unit, 2001.

Cita MLA (9th ed.)

Khuda, Zinatunnessa R. M. M. Environmental Degradation: Challenges of the 21st Century. Environmental Survey and Research Unit, 2001.