Gaya APA
168 hours : you have more time than you think. (2011).
London:
Penguin Group.
Gaya Chicago
168 hours : you have more time than you think.
.
London:
Penguin Group,
2011.
Text.
Gaya MLA
168 hours : you have more time than you think.
.
London:
Penguin Group,
2011.
Text.
Gaya Turabian
168 hours : you have more time than you think.
London:
Penguin Group,
2011.
Print.