APA

(1996). British herbal pharmacopoeia 1996. Exeter: British Herbal Medicine Association.

Chicago

1996. British herbal pharmacopoeia 1996. Exeter: British Herbal Medicine Association.

Harvard

(1996). British herbal pharmacopoeia 1996. Exeter: British Herbal Medicine Association.

MLA

British herbal pharmacopoeia 1996. Exeter: British Herbal Medicine Association. 1996.