APA Style
Fredrickson, Barbara L. (2009).
Positivity: Top-Notch Research Reveals the 3-to-1 Ratio That Will Change Your Life .
New York:
Tree Rivers Press.
Chicago Style
Fredrickson, Barbara L.
Positivity: Top-Notch Research Reveals the 3-to-1 Ratio That Will Change Your Life.
New York:
Tree Rivers Press,
2009.
.
MLA Style
Fredrickson, Barbara L.
Positivity: Top-Notch Research Reveals the 3-to-1 Ratio That Will Change Your Life.
New York:
Tree Rivers Press,
2009.
.
Turabian Style
Fredrickson, Barbara L.
Positivity: Top-Notch Research Reveals the 3-to-1 Ratio That Will Change Your Life.
New York:
Tree Rivers Press,
2009.
.