1. Baldini, E. and Sansavini, S. (1967).Monografia delle Principali Cultivar di Melo.Edizioni Agricole, Bologna, Italy. 302 pp.
2. Bounous, G., Beccaro, G. and Mellano, M. G. (2006). Antiche cultivar di melo in Piemonte.Supplemento numero 52 dei “Quaderni della Regione Piemonte-Agricoltura”.Regione Piemonte, Turin, Italy. 167 pp.
3. Chapman, C. (1989). Principles of germplasm. In:Training Courses: Lecture Series 2. Scientific Management of Germplasm: Characterization, Evaluation, and Enhancement.(Stalker H. T. and Chapman C., Eds.). IBPGR International Board for Plant Genetic Resources, Rome, Italy. 55–64.
4. Jaccard, P. (1908). Nouvelles recherches sur la distribution florale.Bulletin Société Vaudoise des Sciences Naturelles,44,223–270.
5. Molon, G. (1901).Pomologia.Hoepli, Milano, Italy. 717 pp.