SpringerLink (Online service), Marziani, P., Sulentic, J. W., & D'Onofrio, M. (2012). Fifty years of quasars: From early observations and ideas to future research. Springer Berlin Heidelberg.
Chicago Style (17th ed.) CitationSpringerLink (Online service), Paola Marziani, Jack W. Sulentic, and Mauro D'Onofrio. Fifty Years of Quasars: From Early Observations and Ideas to Future Research. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.
MLA (8th ed.) CitationSpringerLink (Online service), et al. Fifty Years of Quasars: From Early Observations and Ideas to Future Research. Springer Berlin Heidelberg, 2012.
Warning: These citations may not always be 100% accurate.