Gaya APA

Dewey, M. (2003). DDC 22 Dewey Decimal Classification Volume 4 (Vol.4). Ohio: OCLC Online Computer Library Center, Inc.

Gaya MLA

Dewey, Melvil. "DDC 22 Dewey Decimal Classification Volume 4". Vol.4 Ohio: OCLC Online Computer Library Center, Inc, 2003. Text.