(2004). Botanica: The illustrated A-Z of over 10,000 garden plants and how to cultivate them (Tercera edición.). Könemann.
Citazione stile Chigago Style (17a edizione)Botanica: The Illustrated A-Z of over 10,000 Garden Plants and How to Cultivate Them. Tercera edición. Colonia: Könemann, 2004.
Citatione MLA (9a ed.)Botanica: The Illustrated A-Z of over 10,000 Garden Plants and How to Cultivate Them. Tercera edición. Könemann, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.