APA (7th ed.) Citation

Wilka, C., Solomon, S., Kinnison, D., & Tarasick, D. (2021). An Arctic ozone hole in 2020 if not for the Montreal Protocol. Atmospheric Chemistry and Physics, 21(20), 15771.

Chicago Style (17th ed.) Citation

Wilka, C., S. Solomon, D. Kinnison, and D. Tarasick. "An Arctic Ozone Hole in 2020 If Not for the Montreal Protocol." Atmospheric Chemistry and Physics 21, no. 20 (2021): 15771.

MLA (9th ed.) Citation

Wilka, C., et al. "An Arctic Ozone Hole in 2020 If Not for the Montreal Protocol." Atmospheric Chemistry and Physics, vol. 21, no. 20, 2021, p. 15771.