APA (7th ed.) Citation

Fitsailo, T. V., & Orlov, O. O. (2009). Crataegus ( dunensis Cin. (Rosaceae), a new species for the flora of Ukraine.

Chicago Style (17th ed.) Citation

Fitsailo, T. V., and O. O. Orlov. Crataegus ( Dunensis Cin. (Rosaceae), a New Species for the Flora of Ukraine. 2009.

MLA (8th ed.) Citation

Fitsailo, T. V., and O. O. Orlov. Crataegus ( Dunensis Cin. (Rosaceae), a New Species for the Flora of Ukraine. 2009.

Warning: These citations may not always be 100% accurate.