APA (7th ed.) Citation

Ryff, L. E. (2011). Cyclospermum leptophyllum (Pers.) Sprague ex Britton et P. Wilson (Apiaceae), a new alien plant for Ukraine.

Chicago Style (17th ed.) Citation

Ryff, L. E. Cyclospermum Leptophyllum (Pers.) Sprague Ex Britton Et P. Wilson (Apiaceae), a New Alien Plant for Ukraine. 2011.

MLA (8th ed.) Citation

Ryff, L. E. Cyclospermum Leptophyllum (Pers.) Sprague Ex Britton Et P. Wilson (Apiaceae), a New Alien Plant for Ukraine. 2011.

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