Dyfyniad APA

Hazeltine,Barrett, & Bull,Christopher. (1999). Appropriate technology: :tools,choices and implications. Academic press.

Dyfyniad Arddull Chicago

Hazeltine,Barrett, and Bull,Christopher. Appropriate Technology: :tools,choices and Implications. USA: Academic press, 1999.

Dyfyniad MLA

Hazeltine,Barrett, and Bull,Christopher. Appropriate Technology: :tools,choices and Implications. Academic press, 1999.

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