Utku, S., Norris, C. H., & Wilbur, J. B. (1991). Elementary structural analysis (4th ed.). McGraw-Hill.

Utku, Senol, Charles Head Norris, and John Benson Wilbur. Elementary Structural Analysis. 4th ed. New York: McGraw-Hill, 1991.

Utku, Senol, et al. Elementary Structural Analysis. 4th ed. McGraw-Hill, 1991.