Gaya APA

Randers, D, H, M, D, L, M, J. (1992). Beyond the Limits . 37-41 Mortimer Street, London,: Earthscan Publication limited london.

Gaya MLA

Randers, Donella, H, Meadows,, Dennis, L, Meadows,, Jorgen. "Beyond the Limits". 37-41 Mortimer Street, London,: Earthscan Publication limited london, 1992. Text.