Cita APA (7a ed.)

Tubb, K. O. (2013). The 13th sign. Feiwel and Friends.

Cita Chicago Style (17a ed.)

Tubb, Kristin O'Donnell. The 13th Sign. New York: Feiwel and Friends, 2013.

Cita MLA (8a ed.)

Tubb, Kristin O'Donnell. The 13th Sign. Feiwel and Friends, 2013.

Precaución: Estas citas no son 100% exactas.