Gregson, M. (1975). Circus (Corgi/ Carusel edition.). Corgi/ Carusel Book.
Chicago-čujuhus (17. p.)Gregson, Maureen. Circus. Corgi/ Carusel edition. London: Corgi/ Carusel Book, 1975.
MLA-čujuhus (9. p.)Gregson, Maureen. Circus. Corgi/ Carusel edition. Corgi/ Carusel Book, 1975.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.