Cita APA (7a ed.)

Riggs, N. C., & Frocht, M. M. (1938). Strength of Materials (2a impr.). Yhe ronald Press Company.

Cita Chicago Style (17a ed.)

Riggs, Norman C., y Max Mark Frocht. Strength of Materials. 2a impr. New York: Yhe ronald Press Company, 1938.

Cita MLA (8a ed.)

Riggs, Norman C., y Max Mark Frocht. Strength of Materials. 2a impr. Yhe ronald Press Company, 1938.