APA (7th ed.) Citation

Tolba, M. K. (1991). Environment and development: Lessons of the past; challenges for the future. UNEP.

Chicago Style (17th ed.) Citation

Tolba, Mostafa K. Environment and Development: Lessons of the Past; Challenges for the Future. Nairobi: UNEP, 1991.

MLA (9th ed.) Citation

Tolba, Mostafa K. Environment and Development: Lessons of the Past; Challenges for the Future. UNEP, 1991.