"Sambong =". Archived from the original on 2009-02-26. Retrieved 2009-12-25. - Bureau of Plant Industry of the Department of Agriculture of the Republic of Philippines Official government website. Accessed December 25, 2009.
"Sambong =". Archived from the original on 2009-02-26. Retrieved 2009-12-25. - Bureau of Plant Industry of the Department of Agriculture of the Republic of Philippines Official government website. Accessed December 25, 2009.