Spigolon, S. J. (2001). The McGraw-Hill civil engineering PE exam depth guide: Geotechnical engineering. New York: McGraw-Hill.
Chicago ZitierstilSpigolon, S. J. The McGraw-Hill Civil Engineering PE Exam Depth Guide: Geotechnical Engineering. New York: McGraw-Hill, 2001.
MLA ZitierstilSpigolon, S. J. The McGraw-Hill Civil Engineering PE Exam Depth Guide: Geotechnical Engineering. New York: McGraw-Hill, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.