APA (7th ed.) Citation

Kielar, M. B., & Kovalčík, V. Materia prima.

Chicago Style (17th ed.) Citation

Kielar, Marzanna Bogumiła, and Vlastimil Kovalčík. Materia Prima.

MLA (9th ed.) Citation

Kielar, Marzanna Bogumiła, and Vlastimil Kovalčík. Materia Prima.

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