Cita APA (7th ed.)
Barker, J. A. (1992). Future edge: Discovering the new paradigms of success. W. Morrow.
Cita Chicago (17th ed.)
Barker, Joel Arthur. Future Edge: Discovering the New Paradigms of Success. New York: W. Morrow, 1992.
Cita MLA (9th ed.)
Barker, Joel Arthur. Future Edge: Discovering the New Paradigms of Success. W. Morrow, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.