Royal Horticultural Society & Brickell, C. (2006). The Royal Horticultural Society encyclopedia of plants and flowers (4th ed.). Dorling Kindersley.
Lua i Stíl Chicago (17ú heag.)Royal Horticultural Society agus Christopher Brickell. The Royal Horticultural Society Encyclopedia of Plants and Flowers. 4th ed. London: Dorling Kindersley, 2006.
Lua MLA (9ú heag.)Royal Horticultural Society agus Christopher Brickell. The Royal Horticultural Society Encyclopedia of Plants and Flowers. 4th ed. Dorling Kindersley, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.