Marlin, M., H. Hartal, A. Romeida, R. Herawati, and M. Simarmata. “Morphological and Flowering Characteristics of Shallot (Allium Cepa Var. Aggregatum) in Response to Gibberellic Acid and Vernalization”. Emirates Journal of Food and Agriculture, vol. 33, no. 5, July 2021, pp. 388-94, doi:10.9755/ejfa.2021.v33.i5.2697.