Crowder, L., & Harrell, H. (2012). Top-bar beekeeping: Organic practices for honeybee health. Chelsea Green Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCrowder, Les, और Heather Harrell. Top-bar Beekeeping: Organic Practices for Honeybee Health. White River Junction, Vt.: Chelsea Green Pub., 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCrowder, Les, और Heather Harrell. Top-bar Beekeeping: Organic Practices for Honeybee Health. Chelsea Green Pub., 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.