Cita APA (7th ed.)

Dewey Melvil. (1971). Decimal Classification and Relative Index vol. ii schedules (18th.). Forest press Inc.

Cita Chicago (17th ed.)

Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. New York: Forest press Inc, 1971.

Cita MLA (9th ed.)

Dewey Melvil. Decimal Classification and Relative Index Vol. Ii Schedules. 18th. Forest press Inc, 1971.