Roth, S. (2008). Backyard bird secrets for every season: Attract a variety of nesting, feeding, and singing birds year-round. Rodale.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoth, Sally. Backyard Bird Secrets for Every Season: Attract a Variety of Nesting, Feeding, and Singing Birds Year-round. Emmaus, Pa.: Rodale, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoth, Sally. Backyard Bird Secrets for Every Season: Attract a Variety of Nesting, Feeding, and Singing Birds Year-round. Rodale, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.