Cita APA (7a ed.)

Smiley, J., & Castillo, L. (2016). Twenty yawns (First edition.). Two Lions.

Cita Chicago Style (17a ed.)

Smiley, Jane, y Lauren Castillo. Twenty Yawns. First edition. New York: Two Lions, 2016.

Cita MLA (8a ed.)

Smiley, Jane, y Lauren Castillo. Twenty Yawns. First edition. Two Lions, 2016.

Precaución: Estas citas no son 100% exactas.