Indian pharmacopoeia , Indian herbal pharmacopoeia, Ayurvedic pharmacopoeia of India, British Herbal Pharmacopoeia, USP, WHO Monographs, American herbal pharmacopoeia etc.
I use professional resources like Eastland Herb's app, Formulas & Strategies, Materia Medica. Anything from Blue Poppy Enterprises and Giovanni Maciocia are also reputable.