Gaya APA
MOHAMAD, R. (2016).
Understanding number building rules in DDC 23 .
Surabaya:
Dep. Informasi & Perpust. FISIP UNAIR.
Gaya MLA
MOHAMAD, Rotmianto.
"Understanding number building rules in DDC 23".
Surabaya:
Dep. Informasi & Perpust. FISIP UNAIR,
2016.
Artikel.