Bulletin of the National Association of Secondary-School Principals.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBulletin of the National Association of Secondary-School Principals.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBulletin of the National Association of Secondary-School Principals.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.