APA (7th ed.) Citation

Batty, C. D. (1992). An Introduction to the twentieth edition of the Dewey Decimal Classification. Library Association Publishing.

Chicago Style (17th ed.) Citation

Batty, C. D. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. London: Library Association Publishing, 1992.

MLA (9th ed.) Citation

Batty, C. D. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. Library Association Publishing, 1992.

Warning: These citations may not always be 100% accurate.