Dyfyniad APA

Horowitz, B. The Hard Thing About Hard Things. Harper Business.

Dyfyniad Arddull Chicago

Horowitz, Ben. The Hard Thing About Hard Things. Harper Business.

Dyfyniad MLA

Horowitz, Ben. The Hard Thing About Hard Things. Harper Business.

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