Lobel, A. (2011). Frog and toad are friends: I can read level 2. HarperCollins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLobel, Arnold. Frog and Toad Are Friends: I Can Read Level 2. New York: HarperCollins, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLobel, Arnold. Frog and Toad Are Friends: I Can Read Level 2. HarperCollins, 2011.
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