Cita APA (7a ed.)

Batty, C. D. (1992). An Introduction to the twentieth edition of the Dewey decimal classification. Forest Press.

Cita Chicago Style (17a ed.)

Batty, C. D. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. Albany, N.Y.: Forest Press, 1992.

Cita MLA (9a ed.)

Batty, C. D. An Introduction to the Twentieth Edition of the Dewey Decimal Classification. Forest Press, 1992.