Hedge, I. C. 1965: Cardaria Desv. in Davis, P. H. (ed.), Flora of Turkey and the East Aegean Islands vol. 1: 285-286. – Edinburgh.
- 1968: Cardaria Desv. in Rechinger, K. H. (ed.), Flora Iranica no. 57: 75-77. – Graz.
- & Lamond, J. M. 1980: Cardaria Desv. in Townsend,
C. C., Guest, E. & Al-Rawi, A. (eds.), Flora of Iraq 4: 896-898. – Baghdad.
Huber-Morath, A. 1975: Achillea L. in Davis, P. H. (ed.), Flora of Turkey and the East Aegean Islands 5: 224-252. – Edinburgh.
- 1986: Achillea L. in Rechinger, K. H. (ed.), Flora Iranica no.158: 49-71. – Graz.
Mozaffarian V, 2008: Achillea in Assadi, M. Maassoumi, A. A. & Mozaffarian, V. Flora of Iran no. 50: 67-106. –Tehran.
Rechinger, K. H. 1977: Scorzonera L. in Rechinger, K. H. (ed.), Flora Iranica no. 122: 16-79. – Graz.
Richardson, I. B. K. 1976: Achillea L. in Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A. (eds.), Flora Europaea vol. 4: 159-165 – Cambridge, etc.
Noroozi, J., Akhani, H. & Breckle, S. W. 2008: Biodiversity and phytogeography of the alpine flora of Iran. – Biodivers. Conserv. 17: 493-521.
Zohary, M. 1973: Geobotanical Foundations of the Middle East 1-2. – Stuttgart.