Cruz, G. A., Pulhin, J. M., Rebugio, L. L., & Pulhin, F. B. (1998). Sustainable mountain ecosystems: Philippines' challenge for the 21st century : proceedings of forum on sustainable mountain ecosystems. College of Forestry and Natural Resources, University of the Philippines Los Banos.
Citazione stile Chigago Style (17a edizione)Cruz, Gladys A., Juan M. Pulhin, Lucrecio L. Rebugio, e Florencia B. Pulhin. Sustainable Mountain Ecosystems: Philippines' Challenge for the 21st Century : Proceedings of Forum on Sustainable Mountain Ecosystems. College, Laguna: College of Forestry and Natural Resources, University of the Philippines Los Banos, 1998.
Citatione MLA (9a ed.)Cruz, Gladys A., et al. Sustainable Mountain Ecosystems: Philippines' Challenge for the 21st Century : Proceedings of Forum on Sustainable Mountain Ecosystems. College of Forestry and Natural Resources, University of the Philippines Los Banos, 1998.