National Botanic Garden of Belgium\nNationale Plantentuin van België. (1999). Systematics and Geography of Plants. National Botanic Gardens.
Lua i Stíl Chicago (17ú heag.)National Botanic Garden of Belgium\nNationale Plantentuin van België. Systematics and Geography of Plants. Meise, Belgica: National Botanic Gardens, 1999.
Lua MLA (8ú heag.)National Botanic Garden of Belgium\nNationale Plantentuin van België. Systematics and Geography of Plants. National Botanic Gardens, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.