Analysis of information sources in references of the Wikipedia article "Sapper" in English language version.
Sappe not only signifies the opening which is made but also the act of sapping. Richelet, Boyer, and others write the word with one p, Trevoux, and Belidor with two; but the mere spelling of a word seems not to have been much attended to, even by the best French writers.
Image of p. 352 at Google Books
{{cite book}}: External link in |quote= (help)Image of p. 352 at Google Books
{{cite book}}: External link in |quote= (help)Image of p. 352 at Google Books
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