APA
Grubb M. e. a., The Royal Institute of International Affairs L. & UN Conference on Environment and Development. (1993). The 'Earth Summit' agreements. London: Earthscan.
Chicago
Grubb Michael et al, The Royal Institute of International Affairs London and UN Conference on Environment and Development. 1993. The 'Earth Summit' agreements. London: Earthscan.
Harvard
Grubb M. e. a., The Royal Institute of International Affairs L. and UN Conference on Environment and Development. (1993). The 'Earth Summit' agreements. London: Earthscan.
MLA
Grubb Michael et al, The Royal Institute of International Affairs London and UN Conference on Environment and Development. The 'Earth Summit' agreements. London: Earthscan. 1993.