St. Edward's University (Austin, Tex.). Center for Continuing Education. Environics Center. Environics Center records.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSt. Edward's University (Austin, Tex.). Center for Continuing Education. Environics Center. Environics Center Records.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSt. Edward's University (Austin, Tex.). Center for Continuing Education. Environics Center. Environics Center Records.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.