APA (7th ed.) Citation

Bojanowski, A., Krupka, D., Sitko, J., & Chmielarz, A. Silver in Poland - achievements in research and production.

Chicago Style (17th ed.) Citation

Bojanowski, A., D. Krupka, J. Sitko, and A. Chmielarz. Silver in Poland - Achievements in Research and Production.

MLA (9th ed.) Citation

Bojanowski, A., et al. Silver in Poland - Achievements in Research and Production.