Bailey, I. W. (1963). Comparative Anatomy of the Leaf-Bearing Cactaceae, VII: The Xylem of Pereskias from Peru and Bolivia. Zenodo.
Cita Chicago (17th ed.)Bailey, Irving W. Comparative Anatomy of the Leaf-Bearing Cactaceae, VII: The Xylem of Pereskias from Peru and Bolivia. Zenodo, 1963.
Cita MLA (9th ed.)Bailey, Irving W. Comparative Anatomy of the Leaf-Bearing Cactaceae, VII: The Xylem of Pereskias from Peru and Bolivia. Zenodo, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.