Gaya APA
Kunci kebahagiaan. ([s.a.]).
Shanghai Jiaotong:
[s.n.].
Gaya Chicago
Kunci kebahagiaan.
.
Shanghai Jiaotong:
[s.n.],
[s.a.].
Text.
Gaya MLA
Kunci kebahagiaan.
.
Shanghai Jiaotong:
[s.n.],
[s.a.].
Text.
Gaya Turabian
Kunci kebahagiaan.
Shanghai Jiaotong:
[s.n.],
[s.a.].
Print.