Barbara Fredrickson

2 titluri

Cărți de Barbara Fredrickson

Coperta cărții Positivity: Top-Notch Research Reveals the 3-To-1 Ratio That Will Change Your Life, Paperback

Positivity: Top-Notch Research Reveals the 3-To-1 Ratio That Will Change Your Life, Paperback

Barbara Fredrickson

Coperta cărții Puterea Emotiilor Pozitive

Puterea Emotiilor Pozitive

Barbara Fredrickson