Gaya APA
Aziz, A.
(2013).
19 Keys: happy, Healthy Wealthy
(
Edisi 1)
.
Yogyakartaa:
Erlangga.
Gaya MLA
Aziz, Abdul.
"19 Keys: happy, Healthy Wealthy".
Edisi 1
Yogyakartaa:
Erlangga,
2013.
Text.