Lua APA (7ú heag.)

HARRIS, F. (1983). Ground Engineering equipment and methods. McGraw-hill.

Lua i Stíl Chicago (17ú heag.)

HARRIS, Frank. Ground Engineering Equipment and Methods. New York: McGraw-hill, 1983.

Lua MLA (9ú heag.)

HARRIS, Frank. Ground Engineering Equipment and Methods. McGraw-hill, 1983.

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