APA Style

David, F, R., David, F, R. (1989 U.S.a). Strategic ManageMent concepts and cases (FIFTEENTH EDITION). U.S.a: PEARSON EDUCATION LIMITED.

MLA Style

David, Fred, R.., David, Forest, R.. "Strategic ManageMent concepts and cases". FIFTEENTH EDITION U.S.a: PEARSON EDUCATION LIMITED, 1989 U.S.a. Text.