APA (7th ed.) Citation

Rühl, E., Heinzel, C., Hitchcock, A. P., & Baumgärtel, H. (1993). Ar 2p spectroscopy of free argon clusters. Journal of Chemical Physics, 98(4), 2653.

Chicago Style (17th ed.) Citation

Rühl, E., C. Heinzel, A. P. Hitchcock, and H. Baumgärtel. "Ar 2p Spectroscopy of Free Argon Clusters." Journal of Chemical Physics 98, no. 4 (1993): 2653.

MLA (9th ed.) Citation

Rühl, E., et al. "Ar 2p Spectroscopy of Free Argon Clusters." Journal of Chemical Physics, vol. 98, no. 4, 1993, p. 2653.