Cita APA (7a ed.)

Walls, C. (2011). Spring in action (3rd ed.). Manning.

Cita Chicago Style (17a ed.)

Walls, Craig. Spring in Action. 3rd ed. Shelter Island: Manning, 2011.

Cita MLA (8a ed.)

Walls, Craig. Spring in Action. 3rd ed. Manning, 2011.

Precaución: Estas citas no son 100% exactas.