Gaya APA
Park, sang-wook. ().
Why ? Happy math .
:
PT Elex Media Koputindo.
Gaya Chicago
Park, sang-wook.
Why ? Happy math.
:
PT Elex Media Koputindo,
.
.
Gaya MLA
Park, sang-wook.
Why ? Happy math.
:
PT Elex Media Koputindo,
.
.
Gaya Turabian
Park, sang-wook.
Why ? Happy math.
:
PT Elex Media Koputindo,
.
.