Cita APA

Mackintosh, H. K. (1940). Elementary education: What is it? Washington: United States Government Printing Office.

Citación estilo Chicago

Mackintosh, Helen K. Elementary Education: What Is It? Washington: United States Government Printing Office, 1940.

Cita MLA

Mackintosh, Helen K. Elementary Education: What Is It? Washington: United States Government Printing Office, 1940.

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