Francisco, M. N., & Cohen, P. (1968). Proceedings of the fourth American water resources conference: November 18-22, 1968, New York. New York: American Water Resources Conference.
Παραπομπή Chicago StyleFrancisco, Martha N., and Philip Cohen. Proceedings of the Fourth American Water Resources Conference: November 18-22, 1968, New York. New York: American Water Resources Conference, 1968.
Παραπομπή MLAFrancisco, Martha N., and Philip Cohen. Proceedings of the Fourth American Water Resources Conference: November 18-22, 1968, New York. New York: American Water Resources Conference, 1968.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.