Withrow-Robinson และผู้แต่งคนอื่นๆ. 2000. The role and function of fruit trees and fruit tree-based agroforestry systems in a highland watershed in Northern Thailand. Graduate School, Oregon State University;

Withrow-Robinson และผู้แต่งคนอื่นๆ. The role and function of fruit trees and fruit tree-based agroforestry systems in a highland watershed in Northern Thailand. . Oregon:Oregon State University, 2000.

Withrow-Robinson และผู้แต่งคนอื่นๆ. (2000) The role and function of fruit trees and fruit tree-based agroforestry systems in a highland watershed in Northern Thailand . Oregon State University/Oregon.