APA (7th ed.) Citation

Den Hartog, J. P. (1949). Strength of materials. McGraw-Hill Book Co.

Chicago Style (17th ed.) Citation

Den Hartog, Jacob Pieter. Strength of Materials. New York: McGraw-Hill Book Co, 1949.

MLA (9th ed.) Citation

Den Hartog, Jacob Pieter. Strength of Materials. McGraw-Hill Book Co, 1949.