Lua APA (7ú heag.)

Ruth, L. C. (2000). Childrens Environments. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Ruth, Linda Cain. Childrens Environments. McGraw-Hill, 2000.

Lua MLA (8ú heag.)

Ruth, Linda Cain. Childrens Environments. McGraw-Hill, 2000.

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