J. R. de Andrade, I. F. S. Medeiros, S. F. da Silva, C. L. L. Costa, and R. A. Andrade, “PRODUCTIVE BEHAVIOR OF THE YELLOW PASSION FRUIT PLANT (PASSIFLORA EDULIS SIMS F. FLAVICARPA DEG.) IN FUNCTION OF DIFFERENT SOURCES OF ORGANIC MANURING”, Green Journal, vol. 4, no. 1, pp. 24–27, Feb. 2009.