@book{1182,
	author = {Holtz, R. D. and Kovacs, William D.},
	title = {An introduction to geotechnical engineering },
	publisher = {Pearson,},
	year = {2011.},
	address = {Noida :},
	edition = {2nd ed.},
	url = {https://www.pearson.com/us/higher-education/program/Holtz-Introduction-to-Geotechnical-Engineering-An-2nd-Edition/PGM151874.html?tab=contents}
}