APA (7th ed.) Citation

Den Hartog, J. P. (1949). Strength of Materials. Dover Publications, Inc..

Chicago Style (17th ed.) Citation

Den Hartog, J. P. Strength of Materials. New York: Dover Publications, Inc., 1949.

MLA (9th ed.) Citation

Den Hartog, J. P. Strength of Materials. Dover Publications, Inc., 1949.