Gaya APA

Ryder, G., Swanson, C, P. (1983). **Strength of materials . New York: New York: Macmillan; 1983.

Gaya MLA

Ryder, G.H., Swanson, Carl, P.. "**Strength of materials". New York: New York: Macmillan; 1983, 1983. Text.