National Center for Construction Education and Research (U.S.). (2006). Heavy equipment operations: Level three : trainee guide (2nd ed.). Prentice Hall.
Chicago-Zitierstil (17. Ausg.)National Center for Construction Education and Research (U.S.). Heavy Equipment Operations: Level Three : Trainee Guide. 2nd ed. Upper Saddle, NJ: Prentice Hall, 2006.
MLA-Zitierstil (8. Ausg.)National Center for Construction Education and Research (U.S.). Heavy Equipment Operations: Level Three : Trainee Guide. 2nd ed. Prentice Hall, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.