(1975). Modern Mathematics for Schools (Second Edition.). Blackie & Son Limited / W & R Chambers Limited.
Citazione stile Chigago Style (17a edizione)Modern Mathematics for Schools. Second Edition. London: Blackie & Son Limited / W & R Chambers Limited, 1975.
Citatione MLA (9a ed.)Modern Mathematics for Schools. Second Edition. Blackie & Son Limited / W & R Chambers Limited, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.