Zalewska, M. and 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 (Dec. 2002), 77–82. DOI:https://doi.org/10.24326/asphc.2002.2.9.