APA Edition Citation

Dewey, M. (1979). Dewey decimal classification and relative index (Ed.19.).

Chicago Edition Citation

Dewey, Melvil. Dewey Decimal Classification and Relative Index. Ed.19. New York, Online Computer Library Centre, 1979.

MLA Edition Citation

Dewey, Melvil. Dewey Decimal Classification and Relative Index. Ed.19. 1979.