Gaya APA
Dewey, M.
(2011).
Dewey Decimal Classification DDC 23 Volume 4
(
23)
.
New York:
OCLC.
Gaya MLA
Dewey, Melvil.
"Dewey Decimal Classification DDC 23 Volume 4".
23
New York:
OCLC,
2011.
Buku.