Cite Them Right 11th edition - Harvard

Williamson, D.P. and Shmoys, D.B. (2011) The design of approximation algorithms [book]. Cambridge [u.a.]: Cambridge Univ. Press.

Chicago Manual of Style 17th edition (full note)

Williamson, David P., and David Bernard Shmoys. The design of approximation algorithms. Book. Cambridge [u.a.]: Cambridge Univ. Press, [2011?], Cambridge [u.a.]: Cambridge Univ. Press, [2011?].

American Psychological Association 7th edition

Williamson, D. P., & Shmoys, D. B. (ca. 2011). The design of approximation algorithms [Book]. Cambridge Univ. Press.

Modern Language Association 9th edition

Williamson, D. P., and D. B. Shmoys. The design of approximation algorithms. book, Cambridge Univ. Press, 2011.

ISO-690 (author-date, Deutsch)

WILLIAMSON, David P. and David Bernard SHMOYS, 2011. The design of approximation algorithms. Cambridge [u.a.]: Cambridge Univ. Press. ISBN 0521195276

Warning: These citations may not always be 100% accurate.