Dyfyniad APA

Drucker, P. F. (1991). Innovation & entrepreneurship. Altrliated east- west.

Dyfyniad Arddull Chicago

Drucker, Peter F. Innovation & Entrepreneurship. New delhi: Altrliated east- west, 1991.

Dyfyniad MLA

Drucker, Peter F. Innovation & Entrepreneurship. Altrliated east- west, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.