Dyfyniad APA

Kassler, R. (1980). The teacher's tools: An instructional aid for workers' educators and trade unionists. International Labour Office.

Dyfyniad Arddull Chicago

Kassler, Reinhard. The Teacher's Tools: An Instructional Aid for Workers' Educators and Trade Unionists. Geneva, Switzerland: International Labour Office, 1980.

Dyfyniad MLA

Kassler, Reinhard. The Teacher's Tools: An Instructional Aid for Workers' Educators and Trade Unionists. International Labour Office, 1980.

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