APA
Gayalord H, Gaylord N, . (1968). Structural Engineering Hand Books. New York: Mc Graw-Hill.
Chicago
Gayalord H, Gaylord N, . 1968. Structural Engineering Hand Books. New York: Mc Graw-Hill.
Harvard
Gayalord H, Gaylord N, . (1968). Structural Engineering Hand Books. New York: Mc Graw-Hill.
MLA
Gayalord H, Gaylord N, . Structural Engineering Hand Books. New York: Mc Graw-Hill. 1968.