APA
"PERRIN H. F. "., . (1972). FOCUS THE FUTURE: AN INTRODUCTION TO LONG RANGE CORPORATE PLANNING. NAGEMENT PUB: MANAGEMENT PUB.
Chicago
"PERRIN H F.ROBERT ", . 1972. FOCUS THE FUTURE: AN INTRODUCTION TO LONG RANGE CORPORATE PLANNING. NAGEMENT PUB: MANAGEMENT PUB.
Harvard
"PERRIN H. F. "., . (1972). FOCUS THE FUTURE: AN INTRODUCTION TO LONG RANGE CORPORATE PLANNING. NAGEMENT PUB: MANAGEMENT PUB.
MLA
"PERRIN H F.ROBERT ", . FOCUS THE FUTURE: AN INTRODUCTION TO LONG RANGE CORPORATE PLANNING. NAGEMENT PUB: MANAGEMENT PUB. 1972.