APA (7th ed.) Citation

Schweickhardt, J., Kaufer, A., Stahl, O., & Wolf, B. (1999). Long term spectroscopy of Wolf-Rayet binaries. Wolf-Rayet phenomena in massive stars and starburst galaxies.

Chicago Style (17th ed.) Citation

Schweickhardt, Jörg, Andreas Kaufer, Otmar Stahl, and Bernhard Wolf. "Long Term Spectroscopy of Wolf-Rayet Binaries." Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies 1999.

MLA (9th ed.) Citation

Schweickhardt, Jörg, et al. "Long Term Spectroscopy of Wolf-Rayet Binaries." Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies, 1999.

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