Cita APA (7a ed.)

Blyton, E., & Hunter, S. (1979). Circus days again. Beaver Books.

Cita Chicago Style (17a ed.)

Blyton, Enid, y Susan Hunter. Circus Days Again. London: Beaver Books, 1979.

Cita MLA (9a ed.)

Blyton, Enid, y Susan Hunter. Circus Days Again. Beaver Books, 1979.