Toronto Mail Order Staff. (1990). "Questions Kids Ask About This and That (Questions Kids Ask, 27)". Grolier Limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रToronto Mail Order Staff. "Questions Kids Ask About This and That (Questions Kids Ask, 27)". Grolier Limited, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रToronto Mail Order Staff. "Questions Kids Ask About This and That (Questions Kids Ask, 27)". Grolier Limited, 1990.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.