APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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