Zalewska, M., & Jerzy, M. (2002). Evaluation of different cultivars of chrysanthemum (Dendranthema grandiflora Tzvelev) for shape the sombrero-type habit. Acta Scientiarum Polonorum Hortorum Cultus, 1(2), 77-82. https://doi.org/10.24326/asphc.2002.2.9