Umar, J.; Uba, A.; Amamatu, D.; Alhassan, A.; Ahmad, B. Utilisation of 5-Methylcoumarin-4β Glucoside Isolated From Vernonia Glaberrima Leaves for The Production Of 4-Hydroxy-5-Methylcoumarin Via Alkali Hydrolysis. IJSGS 2023, 9, 99-107.