1. Hill AF (1952) Economic botany: a textbook of useful plants and plant products, 2nd edn. McGarw Hill, New York
2. Okwu DE (1999) Flavouring properties of spices on cassava Fufu. Afr J Roots Tuber Crops 3(2):19–21
3. Okwu DE (2001) Evaluation of the chemical composition of indigenous spices and flavouring agents. Global J Pure Appl Sci 7(3):455–459
4. Chopra RN, Nayar SL, Chopra IC (2002) Glossary of Indian medicinal plants. NISCAIR, CSIR, New Delhi
5. Sharma V, Agrawal RC (2013) Glycyrrhiza glabra: a plant for the future. Mintage J Pharm Med Sci 2(3):15–20