Carrière, S. M. (2002). 'Orphan trees of the forest': Why do Ntumu farmers of southern Cameroon protect trees in their swidden fields? Zenodo.
Citazione stile Chigago Style (17a edizione)Carrière, Stéphanie M. 'Orphan Trees of the Forest': Why Do Ntumu Farmers of Southern Cameroon Protect Trees in Their Swidden Fields? Zenodo, 2002.
Citatione MLA (9a ed.)Carrière, Stéphanie M. 'Orphan Trees of the Forest': Why Do Ntumu Farmers of Southern Cameroon Protect Trees in Their Swidden Fields? Zenodo, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.