Utku, S., Norris, C. H., & Wilbur, J. B. (1991). Elementary structural analysis (4th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Utku, Senol, Charles Head Norris, agus John Benson Wilbur. Elementary Structural Analysis. 4th ed. New York: McGraw-Hill, 1991.
Lua MLA (8ú heag.)Utku, Senol, et al. Elementary Structural Analysis. 4th ed. McGraw-Hill, 1991.
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