Freeman, A. M. (1982). Air and water pollutions control: A benefit-cost assessment. John Wiley and Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFreeman, A. Myrick. Air and Water Pollutions Control: A Benefit-cost Assessment. John Wiley and Sons, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFreeman, A. Myrick. Air and Water Pollutions Control: A Benefit-cost Assessment. John Wiley and Sons, 1982.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.