APA (7th ed.) Citation

Batty, D. (1990). An introduction to the twentieth edition of the Dewey decimal classification. Forest Press.

Chicago Style (17th ed.) Citation

Batty, David. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. Albany, N.Y.: Forest Press, 1990.

MLA (9th ed.) Citation

Batty, David. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. Forest Press, 1990.