Cita APA (7th ed.)
Rickard, C. (2013). Essential primary mathematics. Open University Press.
Cita Chicago (17th ed.)
Rickard, Caroline. Essential Primary Mathematics. Maidenhead, Berkshire, England: Open University Press, 2013.
Cita MLA (9th ed.)
Rickard, Caroline. Essential Primary Mathematics. Open University Press, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.