Citazione Stile APA (7a Edizione)

Clemson, D., & Clemson, W. (1994). Mathematics in the early years. Routledge.

Citazione stile Chigago Style (17a edizione)

Clemson, David, e Wendy Clemson. Mathematics in the Early Years. London: Routledge, 1994.

Citatione MLA (9a ed.)

Clemson, David, e Wendy Clemson. Mathematics in the Early Years. Routledge, 1994.