(1967). A strategy for a livable environment: A report to the Secretary of Health, Education, and Welfare. Washington: Government Printing Office.
Παραπομπή Chicago StyleA Strategy for a Livable Environment: A Report to the Secretary of Health, Education, and Welfare. Washington: Government Printing Office, 1967.
Παραπομπή MLAA Strategy for a Livable Environment: A Report to the Secretary of Health, Education, and Welfare. Washington: Government Printing Office, 1967.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.