Chatfield, Tom, 1980- Digital : 50 ideas you really need to know / Fifty ideas you really need to know :Digital. Tom Chatfield. - London : Quercus, 2012. - viii, 232 p. ; 22 cm. Includes index. ISBN: 9781780875934 Subjects--Topical Terms: World Wide Web. Dewey Class. No.: 004.6 C T D 221