APA (7th ed.) Citation

Werner, P., Worrall, D., & Birkinshaw, M. (2002). NGC 6251 at multiple scales and wavelengths.

Chicago Style (17th ed.) Citation

Werner, P., D. Worrall, and M. Birkinshaw. NGC 6251 at Multiple Scales and Wavelengths. 2002.

MLA (9th ed.) Citation

Werner, P., et al. NGC 6251 at Multiple Scales and Wavelengths. 2002.