Gaya APA
Al-Qarni, Aidh. (2008).
The Secret of Happiness (1).
Jakarta:
Grafindo Khazanah Ilmu.
Gaya Chicago
Al-Qarni, Aidh.
The Secret of Happiness.
1
Jakarta:
Grafindo Khazanah Ilmu,
2008.
Text.
Gaya MLA
Al-Qarni, Aidh.
The Secret of Happiness.
1
Jakarta:
Grafindo Khazanah Ilmu,
2008.
Text.
Gaya Turabian
Al-Qarni, Aidh.
The Secret of Happiness.
1
Jakarta:
Grafindo Khazanah Ilmu,
2008.
Print.