APA
Day R. W., . (1999). Geotechnical and foundation engineering. New York: McGraw-Hill.
Chicago
Day Robert W, . 1999. Geotechnical and foundation engineering. New York: McGraw-Hill.
Harvard
Day R. W., . (1999). Geotechnical and foundation engineering. New York: McGraw-Hill.
MLA
Day Robert W, . Geotechnical and foundation engineering. New York: McGraw-Hill. 1999.