APA (7th ed.) Citation

Hemsendorf, M., Sigurdsson, S., & Spurzem, R. (2001). Binary black holes in galactic centres. Active galactic nuclei in their cosmic environment.

Chicago Style (17th ed.) Citation

Hemsendorf, Marc, Steinn Sigurdsson, and Rainer Spurzem. "Binary Black Holes in Galactic Centres." Active Galactic Nuclei in Their Cosmic Environment 2001.

MLA (9th ed.) Citation

Hemsendorf, Marc, et al. "Binary Black Holes in Galactic Centres." Active Galactic Nuclei in Their Cosmic Environment, 2001.