Cita APA (7a ed.)

Whal, A. M. Mechanical springs (2a ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Whal, A. M. Mechanical Springs. 2a ed. New York: McGraw-Hill.

Cita MLA (8a ed.)

Whal, A. M. Mechanical Springs. 2a ed. McGraw-Hill.