PDR for herbal medicines, (2004); pp: 267,362,354,625,899.
Handbook of medicinal herbs (2006); pp: 174,261,264-6,328-30.
Herbal medicines Barnes, Anderson, philipson, (2007);
152,217,293,327,604.
The complete German Commission E monographs (1998); pp: 107,
122,124, 135, 181, 233.