Damayanti, A., B. T. Wibowo, Megawati, M. Azhari, and S. A. Fadriana. “Optimization of Anthocyanin Extraction from Cockspur Coral (Erythrina Crista-Galli L.) Petals With Microwave-Assisted Extraction (MAE) Using Response Surface Methodology”. ASEAN Journal of Chemical Engineering, Vol. 21, no. 2, Dec. 2021, pp. 143-57, https://journal.ugm.ac.id/v3/AJChE/article/view/9174.