Ridker, R. G., & Watson, W. D. (1980). To choose a future: Resource and environmental consequences of alternative growth paths. Baltimore: Johns Hopkins University Press.
Παραπομπή Chicago StyleRidker, Ronald Gene, and William D. Watson. To Choose a Future: Resource and Environmental Consequences of Alternative Growth Paths. Baltimore: Johns Hopkins University Press, 1980.
Παραπομπή MLARidker, Ronald Gene, and William D. Watson. To Choose a Future: Resource and Environmental Consequences of Alternative Growth Paths. Baltimore: Johns Hopkins University Press, 1980.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.