APA-viite (7. p.)
Clarke, L. H. (1970). Exercises and worked examples in ordinary level mathematic (Metric ed.). Heinemann.
Chicago-viite (17. p.)
Clarke, L Harwood. Exercises and Worked Examples in Ordinary Level Mathematic. Metric ed. London: Heinemann, 1970.
MLA-viite (9. p.)
Clarke, L Harwood. Exercises and Worked Examples in Ordinary Level Mathematic. Metric ed. Heinemann, 1970.
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