1. Bouquet, R. J. 1950. Cannabis. Bulletin on Narcotics 2(4): 14–30.
2. Brickell, C. D., C. Alexander, J. C. David, W. L. A. Hetterscheid, A. C. Leslie, V. Malecot, X. Jin & J. J. Cubey. 2009. International code of nomenclature for cultivated plants. International Society for Horticultural Science, Leuven.
3. Clarke, R. C. 1995. Hemp (Cannabis sativa L.) cultivation in the Tai’an District of Shandong Province, Peoples Republic of China. Journal of the International Hemp Association 2(2): 57, 60–65.
4. ——— 1981. Marijuana botany: an advanced study: the propagation and breeding of distinctive Cannabis. And/Or Press, Berkeley.
5. ——— 1998. Hashish! Red Eye Press, Los Angeles