The structure , with similar stories repeated three times , is reminiscent of a fairy tale , most specifically ' The Billy Goats Gruff ' .
Madgett is constantly promised greater rewards as he tries his luck with each of the Cissies in turn .
The structure , with similar stories repeated three times , is reminiscent of a fairy tale , most specifically ' The Billy Goats Gruff ' , because Madgett is constantly promised greater rewards as he tries his luck with each of the Cissies in turn .