Bridgewater, A., & Bridgewater, G. (2002). Stonework: Building rock gardens, walks, walls, and ornaments]. Voyageur Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBridgewater, Alan, और Gill Bridgewater. Stonework: Building Rock Gardens, Walks, Walls, and Ornaments]. Stillwater, MN: Voyageur Press, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBridgewater, Alan, और Gill Bridgewater. Stonework: Building Rock Gardens, Walks, Walls, and Ornaments]. Voyageur Press, 2002.
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