Cita APA

Hammond, A. (1998). Which world?: Scenarios for the 21st century. Washington: World Resources Institute.

Chicago Style Citation

Hammond, Allen. Which World?: Scenarios for the 21st Century. Washington: World Resources Institute, 1998.

Cita MLA

Hammond, Allen. Which World?: Scenarios for the 21st Century. Washington: World Resources Institute, 1998.

Atenció: Aquestes cites poden no estar 100% correctes.