Sánchez Santillán, T., J. Meléndez Mori, E. Morales Rojas, A. Chichipe Puscan, S. Oliva Cruz, and M. Huaman Vela. “Clonal Multiplication of the Cinchona Tree (Cinchona officinalis): An Alternative to Conserve the National Tree of Peru”. Bioagro, vol. 33, no. 3, Aug. 2021, pp. 215-22, doi:10.51372/bioagro333.7.