APA (7th ed.) Citation

Yosifov, D., & Radichev, R. (2018). Earth’s crust of large deposits of non-ferrous metals in Bulgaria. S. Subbotin Institute of Geophysics of the NAS of Ukraine.

Chicago Style (17th ed.) Citation

Yosifov, D., and R. Radichev. Earth’s Crust of Large Deposits of Non-ferrous Metals in Bulgaria. S. Subbotin Institute of Geophysics of the NAS of Ukraine, 2018.

MLA (8th ed.) Citation

Yosifov, D., and R. Radichev. Earth’s Crust of Large Deposits of Non-ferrous Metals in Bulgaria. S. Subbotin Institute of Geophysics of the NAS of Ukraine, 2018.

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