Παραπομπή APA

Drucker, P. F. (1993). Managing for the future: The 1990s and beyond. McGraw -Hill.

Παραπομπή Chicago Style

Drucker, Peter F. Managing for the Future: The 1990s and Beyond. New Delhi: McGraw -Hill, 1993.

Παραπομπή MLA

Drucker, Peter F. Managing for the Future: The 1990s and Beyond. McGraw -Hill, 1993.