APA Style
Rubin, Gretchen. (2019).
The Happiness Project .
New York:
Harper Collins.
Chicago Style
Rubin, Gretchen.
The Happiness Project.
New York:
Harper Collins,
2019.
.
MLA Style
Rubin, Gretchen.
The Happiness Project.
New York:
Harper Collins,
2019.
.
Turabian Style
Rubin, Gretchen.
The Happiness Project.
New York:
Harper Collins,
2019.
.