Sifton, Pat
Workbook for DDC 20 : Dewey Decimal Classification Edition 20
Canadian Library Association, 1989
 Buku Referensi
Satija, Mohinder Partap, 1949-
Introduction to the practice of Dewey Decimal Classification
Oriental University Press , 1987
 Buku Teks
Dewey, Melvil
Dewey Decimal Classification and relative index : edition 20, volume 1, introduction, tables
Forest Press, 1989
 Buku Referensi
Dewey, Melvil
DDC 21 (Dewey Decimal Classification Edition 21) : Volume 3 Schedules 600-999
New York : Forest Press, 1996,
 Buku Referensi
Dewey, Melvil
DDC 21 (Dewey Decimal Classification Edition 21) : Volume 2 Schedules 000-599
Forest Press, 1996
 Buku Referensi