Keller, R. (2004). Identification of tropical woody plants in the absence of flowers and fruits: A field guide (Second edition.). Birkhèauser Verlag.
Citace podle Chicago (17th ed.)Keller, Roland. Identification of Tropical Woody Plants in the Absence of Flowers and Fruits: A Field Guide. Second edition. Basel: Birkhèauser Verlag, 2004.
Citace podle MLA (9th ed.)Keller, Roland. Identification of Tropical Woody Plants in the Absence of Flowers and Fruits: A Field Guide. Second edition. Birkhèauser Verlag, 2004.
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