APA (7th ed.) Citation

Klenina, A., Ruchin, A., & Bykov, E. (2021). Occurrence of the birds of the Middle Volga Region (South-East of the European part of Russia). Pensoft Publishers.

Chicago Style (17th ed.) Citation

Klenina, Anastasia, Alexander Ruchin, and Evgenii Bykov. Occurrence of the Birds of the Middle Volga Region (South-East of the European Part of Russia). Pensoft Publishers, 2021.

MLA (8th ed.) Citation

Klenina, Anastasia, et al. Occurrence of the Birds of the Middle Volga Region (South-East of the European Part of Russia). Pensoft Publishers, 2021.