Washington (State). Office of Program Planning and Fiscal Management. (1970). Environmental quality ... a program for Washington. [s.n.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWashington (State). Office of Program Planning and Fiscal Management. Environmental Quality ... a Program for Washington. Olympia: [s.n.], 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWashington (State). Office of Program Planning and Fiscal Management. Environmental Quality ... a Program for Washington. [s.n.], 1970.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.