Kou, W.-Z., J. Jun Yang, Q.-H. Yang, Y. Wang, Z.-F. Wang, S.-L. Xu, and J. Liu. “STUDY ON IN-VIVO ANTI-TUMOR ACTIVITY OF VERBENA OFFICINALIS EXTRACT”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 10, no. 3, Mar. 2013, p. 512a-517, https://journals.athmsi.org/index.php/ajtcam/article/view/1801.