APA (7th ed.) Citation

Gubaidullin, A. M., & Belyaev, A. V. About the Early Defensive Line of the Bolgar Settlement. State institution «Tatarstan Аcademy of Sciences».

Chicago Style (17th ed.) Citation

Gubaidullin, Airat M., and Aleksandr V. Belyaev. About the Early Defensive Line of the Bolgar Settlement. State institution «Tatarstan Аcademy of Sciences».

MLA (9th ed.) Citation

Gubaidullin, Airat M., and Aleksandr V. Belyaev. About the Early Defensive Line of the Bolgar Settlement. State institution «Tatarstan Аcademy of Sciences».

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