Sunset Books. (1998). Children's play areas. Sunset Books, Inc.
Cita Chicago (17th ed.)Sunset Books. Children's Play Areas. Menlo Park, Calif: Sunset Books, Inc, 1998.
Cita MLA (9th ed.)Sunset Books. Children's Play Areas. Sunset Books, Inc, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.