APA (7th ed.) Citation

(2012). Recommender systems: An introduction (1. publ., repr.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Recommender Systems: An Introduction. 1. publ., repr. Cambridge [u.a.]: Cambridge Univ. Press, 2012.

MLA (9th ed.) Citation

Recommender Systems: An Introduction. 1. publ., repr. Cambridge Univ. Press, 2012.