Intermediate Technology Development Group, Gater, A., Meller, T., & Warsany, J. (1968). Tools for progress: Guide to equipment and materials for small-scale development available in the United Kingdom. Intermediate Technology Development Group.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Intermediate Technology Development Group, Anthony Gater, Tim Meller, và John Warsany. Tools for Progress: Guide to Equipment and Materials for Small-scale Development Available in the United Kingdom. London: Intermediate Technology Development Group, 1968.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Intermediate Technology Development Group, et al. Tools for Progress: Guide to Equipment and Materials for Small-scale Development Available in the United Kingdom. Intermediate Technology Development Group, 1968.
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