McVaugh, Rogers: „The American Collections of Humboldt and Bonpland as decribed in the ‚Systema Vegetabilium‘ of Roemer and Schultes [1955]“, Humboldt, Bonpland, Kunth and tropical American botany. Ed. by William T. Stearn, Lehre: J. Cramer 1968, S. 32–43.

Kurztitel: McVaugh 1968