Ibrahima, Adamou, Pierre Mapongmetsem, Hortense Mompea, Laïssou Moussou, and Nyomo --. 2006. “Vascular Epiphytes and Parasitic Plants on Vitellaria Paradoxa Gaertn. (Sapotaceae) in the Sudano-Guinean Savannas of Ngaoundere, Cameroon”. Selbyana 27 (1), 72-78. https://journals.flvc.org/selbyana/article/view/121325.