1. Singh, G. (2016). Plant systematics. In An integrated approach (3rd ed.). Boca Raton: CRC Press.
2. Impellizzeri, G., Mangiafico, S., Oriente, G., Piattelli, M., Sciuto, S., Fattorusso, E., et al. (1975). Amino acids and low-molecular-weight carbohydrates of some marine red algae. Phytochemistry, 14(7), 1549–1557.
3. Radfar, M., Sudarshana, M. S., & Niranjan, M. H. (2012). Betalains from stem callus cultures of Zaleya decandra LN Burm. f.-A medicinal herb. Journal of Medicinal Plants Research, 6(12), 2443–2447.
4. Kumar, S., Singh, P., Mishra, G., Srivastar, S., Jha, K. K., & Khosa, R. L. (2011). Phytopharmacological review of Alternanthera brasiliana (Amaranthaceae). Asian Journal of Plant Science and Research, 1(1), 41–47.
5. Hilou, A., Millogo-Rasolodimby, J., & Nacoulma, O. G. (2013). Betacyanins are the most relevant antioxidant molecules of Amaranthus spinosus and Boerhavia erecta. Journal of Medicinal Plants Research, 7(11), 645–652.