Fischer, T., Bloom, R., & Bloom, A. (2009). Perennial companions: 100 dazzling plant combinations for every season. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFischer, Thomas, Richard Bloom, और Adrian Bloom. Perennial Companions: 100 Dazzling Plant Combinations for Every Season. Portland, Or.: Timber Press, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFischer, Thomas, et al. Perennial Companions: 100 Dazzling Plant Combinations for Every Season. Timber Press, 2009.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.