Sinnott Jan D. Ed. Positive psychology Advance in understanding adult motivation - New York Springer U.S.A 2013 - xxiii, 353p. cm. ISBN: 9781461472810 (hbk) 8049.19 Standard No.: 281,482 Source: 26, 26/08/2014, Mallika Books Textual Subjects--Topical Terms: PSYCHOLOGY Dewey Class. No.: S2:65, Q3