APA (7th ed.) Citation

Seiler, R., Hollenstein, U., Softley, T., & Merkt, F. (2003). High-resolution threshold-ionization spectroscopy of NH3.

Chicago Style (17th ed.) Citation

Seiler, R., U. Hollenstein, T. Softley, and F. Merkt. High-resolution Threshold-ionization Spectroscopy of NH3. 2003.

MLA (9th ed.) Citation

Seiler, R., et al. High-resolution Threshold-ionization Spectroscopy of NH3. 2003.