Craggs, M., & Aggs, P. (2004). Rhyming riddles (Cambridge Storybooks ed.). Cambridge University Press.

Craggs, Marjorie, and Patrice Aggs. Rhyming Riddles. Cambridge Storybooks ed. Cambridge, UK ; New York: Cambridge University Press, 2004.

Craggs, Marjorie, and Patrice Aggs. Rhyming Riddles. Cambridge Storybooks ed. Cambridge University Press, 2004.