Cita APA (7a ed.)

Keene, C. (2009). The secret of the old clock: 80th anniversary limited edition.

Cita Chicago Style (17a ed.)

Keene, Carolyn. The Secret of the Old Clock: 80th Anniversary Limited Edition. 2009.

Cita MLA (8a ed.)

Keene, Carolyn. The Secret of the Old Clock: 80th Anniversary Limited Edition. 2009.

Precaución: Estas citas no son 100% exactas.