Cita APA (7a ed.)

SPOTTS, M., & SHOUP, T. (1998). Design of machine element (Ed.7.). Prentice-Hall International.

Cita Chicago Style (17a ed.)

SPOTTS, M.F, y T.E SHOUP. Design of Machine Element. Ed.7. New Jersey: Prentice-Hall International, 1998.

Cita MLA (9a ed.)

SPOTTS, M.F, y T.E SHOUP. Design of Machine Element. Ed.7. Prentice-Hall International, 1998.