Allen, R. G. D. (1963). Mathematical economics (2nd ed.). Macmillan.
Tohutoru Kātū Chicago (17th ed.)Allen, Roy George Douglas. Mathematical Economics. 2nd ed. London: Macmillan, 1963.
Tohutoro MLA (9th ed.)Allen, Roy George Douglas. Mathematical Economics. 2nd ed. Macmillan, 1963.
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