Pilbeam, J. (2018). Happy cactus: Cacti, succulents, and more (First American edition.). DK Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPilbeam, John. Happy Cactus: Cacti, Succulents, and More. First American edition. New York, New York: DK Publishing, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPilbeam, John. Happy Cactus: Cacti, Succulents, and More. First American edition. DK Publishing, 2018.
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