APA (7th ed.) Citation

Rakovská, A., Ivanič Porhajašová, J., Kvetanová, Ľ., & Ondrišík, P. Concentration of nitrate and ammonium nitrogen in different ecosystems.

Chicago Style (17th ed.) Citation

Rakovská, Alena, Jana Ivanič Porhajašová, Ľubomíra Kvetanová, and Peter Ondrišík. Concentration of Nitrate and Ammonium Nitrogen in Different Ecosystems.

MLA (9th ed.) Citation

Rakovská, Alena, et al. Concentration of Nitrate and Ammonium Nitrogen in Different Ecosystems.

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