APA (7th ed.) Citation

Hrbas, M., & Marco, J. Ancient coins from Olbia and Panticapaeum. Spring Books.

Chicago Style (17th ed.) Citation

Hrbas, M., and J. Marco. Ancient Coins from Olbia and Panticapaeum. London: Spring Books.

MLA (9th ed.) Citation

Hrbas, M., and J. Marco. Ancient Coins from Olbia and Panticapaeum. Spring Books.

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