Gamma, Erich Design patterns : elements of reusable object-oriented software / Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides - India : Pearson, c2016. - xvii,380 p. : 23.5 cm. Includes Index ISBN: 9789332555402 Subjects--Topical Terms: Computer Science Dewey Class. No.: 005.12 / G146d