Aslakson, C. I. (1936). Instructions to lightkeepers on first-order triangulation.
Chicago Style (17th ed.) CitationAslakson, Carl I. Instructions to Lightkeepers on First-order Triangulation. 1936.
MLA (9th ed.) CitationAslakson, Carl I. Instructions to Lightkeepers on First-order Triangulation. 1936.
Warning: These citations may not always be 100% accurate.