APA-viite

Livio, M., & Koekemoer, A. (2011). Black holes: Proceedings of the space telescope science institute symposium. Cambridge.

Chicago-tyylinen lähdeviittaus

Livio, Mario., ja Anton Koekemoer. Black Holes: Proceedings of the Space Telescope Science Institute Symposium. Cambridge: Cambridge, 2011.

MLA-viite

Livio, Mario., ja Anton Koekemoer. Black Holes: Proceedings of the Space Telescope Science Institute Symposium. Cambridge, 2011.