Cita APA (7th ed.)

Spotts, M. F. (1961). Design of machine elements (3a. ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Spotts, Merhyle Franklin. Design of Machine Elements. 3a. ed. Englewood Cliffs: Prentice-Hall, 1961.

Cita MLA (9th ed.)

Spotts, Merhyle Franklin. Design of Machine Elements. 3a. ed. Prentice-Hall, 1961.