APA (7th ed.) Citation

Bertová, L., & Berta, J. Echium L.

Chicago Style (17th ed.) Citation

Bertová, Lýdia, and Ján Berta. Echium L.

MLA (9th ed.) Citation

Bertová, Lýdia, and Ján Berta. Echium L.

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