Ho และผู้แต่งคนอื่นๆ. 1999. Food and income generating capacity of homegarden systems in the upland area of the North Central Coast of Vietnam. Field of Study Agricultural systems, Chiang Mai University;

Ho และผู้แต่งคนอื่นๆ. Food and income generating capacity of homegarden systems in the upland area of the North Central Coast of Vietnam. . Chiang Mai:Chiang Mai University, 1999.

Ho และผู้แต่งคนอื่นๆ. (1999) Food and income generating capacity of homegarden systems in the upland area of the North Central Coast of Vietnam . Chiang Mai University/Chiang Mai.