APA (7th ed.) Citation

Crutzen, P. J., & Mueller, R. (1994). On the relevance of the methane oxidation cycle to ozone hole chemistry.

Chicago Style (17th ed.) Citation

Crutzen, Paul J., and Rolf Mueller. On the Relevance of the Methane Oxidation Cycle to Ozone Hole Chemistry. 1994.

MLA (9th ed.) Citation

Crutzen, Paul J., and Rolf Mueller. On the Relevance of the Methane Oxidation Cycle to Ozone Hole Chemistry. 1994.

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