Gaya APA

Timoshenko, S., , . (1976). **Strength of materials part I elementary theory and problems . New York: New York: Robert E. Krieger; 1976.

Gaya MLA

Timoshenko, S., , . "**Strength of materials part I elementary theory and problems". New York: New York: Robert E. Krieger; 1976, 1976. Text.