The Happiness Project > Editions
by Gretchen Rubin First published 2009
Published January 1st 2018
by Harper Perennial
Paperback, 0 pages
Published July 28th 2016
by Nook Press
Paperback, 70 pages
Published January 1st 2020
by Studio Emka
Paperback, 420 pages
Published June 13th 2016
by Harper Paperbacks
Paperback, 336 pages
Published October 21st 2013
by Pocket
Mass Market Paperback, 384 pages
Published August 17th 2015
by HarperCollins
Unabridged, Audio CD, 0 pages
Published 2009
by HarperCollins
First Canadian Edition, Hardcover, 301 pages
Published January 1st 2011
by Harper-Collins Publishers
Later Printing, Paperback, 0 pages