Halvorson, Kristina. Content strategy for the Web / Kristina Halvorson, Melissa Rach ; foreword by Sarah Cancilla, Facebook. - 2nd ed. - Berkeley, CA : New Riders, c2012. - xviii, 197 p. : ill. ; 23 cm. ISBN: 9780321808301 LC Class. No.: TK 5105.88 .H356 2012