APA (7th ed.) Citation

Scientific Conference with International Participation "Technical Progress in Mining and Geology" Varna, Bulgaria, Vissh minno-geolozhki institut, & Bandov, K. Ĭ. (1981). Sbornik dokladi. Vissh minno-geolozhki in-t.

Chicago Style (17th ed.) Citation

Scientific Conference with International Participation "Technical Progress in Mining and Geology" Varna, Bulgaria, Vissh minno-geolozhki institut, and Kiril Ĭ Bandov. Sbornik Dokladi. Sofi︠i︡a: Vissh minno-geolozhki in-t, 1981.

MLA (8th ed.) Citation

Scientific Conference with International Participation "Technical Progress in Mining and Geology" Varna, Bulgaria, et al. Sbornik Dokladi. Vissh minno-geolozhki in-t, 1981.