APA (7th ed.) Citation

(1850). Helleborus Niger: Schwarze Niesewurzel, Elleboro nero, Fekete Húnyor, Černa Čmerice.

Chicago Style (17th ed.) Citation

Helleborus Niger: Schwarze Niesewurzel, Elleboro Nero, Fekete Húnyor, Černa Čmerice. [S.l.], 1850.

MLA (9th ed.) Citation

Helleborus Niger: Schwarze Niesewurzel, Elleboro Nero, Fekete Húnyor, Černa Čmerice. 1850.

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