Norges tekniske høgskole. Division of Construction Engineering. (1979). Drillability: Drilling rate index catalogue. The Institute.
Chicago Style (17th ed.) CitationNorges tekniske høgskole. Division of Construction Engineering. Drillability: Drilling Rate Index Catalogue. [Trondheim, Norway]: The Institute, 1979.
MLA (9th ed.) CitationNorges tekniske høgskole. Division of Construction Engineering. Drillability: Drilling Rate Index Catalogue. The Institute, 1979.
Warning: These citations may not always be 100% accurate.