Cita APA (7th ed.)
Clarke, L. H. (1970). Exercises and worked examples in ordinary level mathematic (Metric ed.). Heinemann.
Cita Chicago (17th ed.)
Clarke, L Harwood. Exercises and Worked Examples in Ordinary Level Mathematic. Metric ed. London: Heinemann, 1970.
Cita MLA (9th ed.)
Clarke, L Harwood. Exercises and Worked Examples in Ordinary Level Mathematic. Metric ed. Heinemann, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.