Dhungel, D. 1993. "The Effect of Harvest Date on Biomass Production and Oil Yield on Native Lemon grass (C. flexuousus)." Renewable Natural Resources Workshop.
Evans, J. 1984. "Silviculture of Broad-leaved Woodland." Forestry Commission Bulletin 62, pp. 115 to 116.
The Flora of Bhutan, Vol. 2, Part 1.
The Forestry Services Division, video No. DF/Ga-3-6/94/3954 dated 25 February, 1994.
Forest Flora of Chakrata, Dehra Dun, and Saharanpur.
Indian Forest Utilization, Vol. II.
Grierson, A.J.C. and D.G. Long. Flora of Bhutan. Royal Botanical Gardens, Edinburgh: Vol. 1, Part I.
Manual on Resin Tapping for Chir Pine Areas Under Tapping in Bhutan.
The Royal Government of Bhutan. 1991. Master Plan for Forestry Development. Annex Report No. 8.
The Royal Government of Bhutan. "Preinvestment Reports of Forest Resources for Northwest, Central and Eastern, and Southern Bhutan."
The Royal Government of Bhutan. "Problems Besetting Medicinal Plant Collection and Utilisation." Refer to p. 3, paragraph 2.1.1, of the Master Plan for Forestry Development, Annex Report No. 8.
Stapleton, Chris. Bamboos of Bhutan.
Study on the Market for Selected Medicinal Plants and Their Derivatives, Geneva, 1982.
USDA (United States Department of Agriculture). 1992. An Interim Guide to the Conservation and Management of Pacific Yew. Forest Service, Pacific Northwest Region.
