APA Style

S., T, (, =, N, 6, ). (1976). Strength of materials part I : elementary theory and problems (3). New York: Robert E. Krieger Publ. Co..

MLA Style

S., TIMOSHENKO, (, =, No, 6, ),. "Strength of materials part I : elementary theory and problems". 3 New York: Robert E. Krieger Publ. Co., 1976. Text.