APA aipamena

BARKER JOEL ARTHUR. (1993). PARADIGMS: THE BUSINESS OF DISCOVERING THE FUTURE. HARPER COLLINS PUBLISHERS.

Chicago Style aipamena

BARKER JOEL ARTHUR. PARADIGMS: THE BUSINESS OF DISCOVERING THE FUTURE. NEW YPRK: HARPER COLLINS PUBLISHERS, 1993.

MLA aipamena

BARKER JOEL ARTHUR. PARADIGMS: THE BUSINESS OF DISCOVERING THE FUTURE. HARPER COLLINS PUBLISHERS, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.