Cita APA (7a ed.)
Pytel, A., & Ferdinand L. Singer. (1987). Strength of Materials. Addition-Wesley.
Cita Chicago Style (17a ed.)
Pytel, Andrew, y Ferdinand L. Singer. Strength of Materials. London: Addition-Wesley, 1987.
Cita MLA (9a ed.)
Pytel, Andrew, y Ferdinand L. Singer. Strength of Materials. Addition-Wesley, 1987.
Precaución: Estas citas no son 100% exactas.