APA (7th ed.) Citation

Groudeva, V. I., Groudev, S. N., & Petkova, S. Biological treatment of acid drainage waters from a copper mine.

Chicago Style (17th ed.) Citation

Groudeva, V. I., S. N. Groudev, and S. Petkova. Biological Treatment of Acid Drainage Waters from a Copper Mine.

MLA (9th ed.) Citation

Groudeva, V. I., et al. Biological Treatment of Acid Drainage Waters from a Copper Mine.