Cita APA (7th ed.)

Mortimer, M. (1997). Learn Dewey Decimal Classification (Edition 21). DocMatrix Pty Ltd.

Cita Chicago (17th ed.)

Mortimer, Mary. Learn Dewey Decimal Classification (Edition 21). Canberra: DocMatrix Pty Ltd, 1997.

Cita MLA (9th ed.)

Mortimer, Mary. Learn Dewey Decimal Classification (Edition 21). DocMatrix Pty Ltd, 1997.

Atenció: Aquestes cites poden no estar 100% correctes.