(1957). International guide to European sources of technical information: Austria, Belgium, Denmark, France, Germany, Greece, Italy, Netherlands, Norway, Sweden, United Kingdom.
Chicago-Zitierstil (17. Ausg.)International Guide to European Sources of Technical Information: Austria, Belgium, Denmark, France, Germany, Greece, Italy, Netherlands, Norway, Sweden, United Kingdom. Paris, 1957.
MLA-Zitierstil (9. Ausg.)International Guide to European Sources of Technical Information: Austria, Belgium, Denmark, France, Germany, Greece, Italy, Netherlands, Norway, Sweden, United Kingdom. 1957.
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