APA (7th ed.) Citation

Liu, S., Liu, S., Valks, P., Pinardi, G., Xu, J., Xu, J., . . . Loyola, D. G. (2021). An improved TROPOMI tropospheric NO<sub>2</sub> research product over Europe. Copernicus Publications.

Chicago Style (17th ed.) Citation

Liu, S., et al. An Improved TROPOMI Tropospheric NO<sub>2</sub> Research Product over Europe. Copernicus Publications, 2021.

MLA (8th ed.) Citation

Liu, S., et al. An Improved TROPOMI Tropospheric NO<sub>2</sub> Research Product over Europe. Copernicus Publications, 2021.

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