Rutaceae of the Guayana highland - Cowan, Richard Sumner 1921-1997 (Bronx, N.Y. : New York Botanical Garden, 1967)
Bromeliaceae of the Guayana highland / Lyman B. Smith--Orchidaceae of the Guayana highland / Charles Schweinfurth
Keywords: RUTACEAS -- IDENTIFICACIÓN -- GUAYANA