Catherine Hapka. (2012). Pony Scouts: The Trail Ride (I Can Read Level 2) (I Can Read Book 2.). HarperCollins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCatherine Hapka. Pony Scouts: The Trail Ride (I Can Read Level 2). I Can Read Book 2. HarperCollins, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCatherine Hapka. Pony Scouts: The Trail Ride (I Can Read Level 2). I Can Read Book 2. HarperCollins, 2012.
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