An Introduction to the twentieth edition of the Dewey decimal classification /
David Batty.
APA Citation
Batty, C. D. (1992). An Introduction to the twentieth edition of the Dewey decimal classification. London : Library Association Publishing .
MLA Citation
Batty, C. D. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. London : Library Association Publishing , 1992.
Warning: These citations may not always be complete (especially for serials).