Gaya APA
RUBIN, Gretchen. (2018).
The happines project .
New York:
Harper Collins Publishers.
Gaya Chicago
RUBIN, Gretchen.
The happines project.
New York:
Harper Collins Publishers,
2018.
Text.
Gaya MLA
RUBIN, Gretchen.
The happines project.
New York:
Harper Collins Publishers,
2018.
Text.
Gaya Turabian
RUBIN, Gretchen.
The happines project.
New York:
Harper Collins Publishers,
2018.
Print.