Ondra, N. J. (2016). The perennial matchmaker: Create amazing combinations with your favorite perennials. Rodale.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOndra, Nancy J. The Perennial Matchmaker: Create Amazing Combinations with Your Favorite Perennials. Emmaus, Pennsylvania: Rodale, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOndra, Nancy J. The Perennial Matchmaker: Create Amazing Combinations with Your Favorite Perennials. Rodale, 2016.
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