Nur Afifah
Pengaruh penguasaan mata kuliah klasifikasi ddc terhadap kemampuan menentukan notasi
Pusat Jasa Perpustakaan dan Informasi, 2021
 Artikel Jurnal
Dewey, Melvil
DDC 21 (Dewey Decimal Classification Edition 21) : Volume 2 Schedules 000-599
Forest Press, 1996
 Buku Referensi
Dewey, Melvil
Dewey decimal classification and relative index edition 23 Volume 2: schedules 000-599
OCLC Online Computer Library Center, Inc., 2011
 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
Dewey decimal classification and relative index edition 23 Volume 3: schedules 600-999
OCLC Online Computer Library Center, Inc., 2011
 Buku Referensi