Additional references

• Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (eds.) 1968. Flora Europaea. Volume 2: Rosaceae to Umbelliferae. Cambridge University Press, Cambridge (UK), xxvii + 455 pp, ISBN 0-521-06662-X. Reference page. 
• Meikle, R.D. 1977. Flora of Cyprus. Volume One (Pinaceae to Theligonaceae). XII, 832 pp. Bentham-Moxon Trust & Royal Botanic Gardens Kew, London 1977. ISBN 0-9504876-3-5 Reference page. 
• Davis, P.H., Mill, R.R. & Tan, K. (eds.) 1988. Flora of Turkey and the East Aegean Islands. Vol. 10 (Supplement). Edinburgh University Press, Edinburgh, xxi + 590 pp., ISBN 0-85224-559-9. Reference page. 

• Dimopoulos, P., Raus, Th., Bergmeier, E., Constantinidis, Th., Iatroú, G., Kokkini, S., Strid, A. & Tzanoudakis, D. 2013. Vascular Plants of Greece: An Annotated Checklist. Englera 31: 1–368. JSTOR PDF Reference page. 

Links

• Govaerts, R. et al. 2019. Viola alba in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 December 1. Reference page. 
• Hassler, M. 2019. Viola alba. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2019 December 1. Reference page. 
• International Plant Names Index. 2019. Viola alba. Published online. Accessed: 1 December 2019.