APA (7th ed.) Citation

Boiarina, N. I., & Kovalenko, H. H. (2017). Ontogenetic changes of some late carboniferous ferns and pteridosperms of the Donets Basin.

Chicago Style (17th ed.) Citation

Boiarina, N. I., and H. H. Kovalenko. Ontogenetic Changes of Some Late Carboniferous Ferns and Pteridosperms of the Donets Basin. 2017.

MLA (8th ed.) Citation

Boiarina, N. I., and H. H. Kovalenko. Ontogenetic Changes of Some Late Carboniferous Ferns and Pteridosperms of the Donets Basin. 2017.

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