APA
Ryder G.H, . (1992). Strength of material. : Basingstoke ELBS.
Chicago
Ryder G.H, . 1992. Strength of material. : Basingstoke ELBS.
Harvard
Ryder G.H, . (1992). Strength of material. : Basingstoke ELBS.
MLA
Ryder G.H, . Strength of material. : Basingstoke ELBS. 1992.