Pennsylvania. Department of Environmental Protection, & Pennsylvania. Department of Community and Economic Development. (1999). The Small Business Pollution Prevention Assistance Account: Helping companies make environmental compliance profitable. Harrisburg, PA: Pennsylvania Department of Environmental Protection.
Παραπομπή Chicago StylePennsylvania. Department of Environmental Protection, και Pennsylvania. Department of Community and Economic Development. The Small Business Pollution Prevention Assistance Account: Helping Companies Make Environmental Compliance Profitable. Harrisburg, PA: Pennsylvania Department of Environmental Protection, 1999.
Παραπομπή MLAPennsylvania. Department of Environmental Protection, και Pennsylvania. Department of Community and Economic Development. The Small Business Pollution Prevention Assistance Account: Helping Companies Make Environmental Compliance Profitable. Harrisburg, PA: Pennsylvania Department of Environmental Protection, 1999.