Ref2

https://books.google.com.my/books?id=d42RCwAAQBAJ&pg=PA96&lpg=PA96&dq=vitamin+A+in+mashua+plant&source=bl&ots=iE47w7peuK&sig=zAv-boJLZ6oX1KR_lWWn6nTswaw&hl=en&sa=X&redir_esc=y#v=onepage&q=vitamin%20A%20in%20mashua%20plant&f=false