Trask, C. (2006). It's easy being green: A handbook for earth-friendly living. Gibbs Smith.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTrask, Crissy. It's Easy Being Green: A Handbook for Earth-friendly Living. Salt Lake City, Utah: Gibbs Smith, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTrask, Crissy. It's Easy Being Green: A Handbook for Earth-friendly Living. Gibbs Smith, 2006.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.