WALTERS, A. A. (1970). An Introduction to econometrics (2nd ed.). Macmillan.
Tohutoru Kātū Chicago (17th ed.)WALTERS, A. A. An Introduction to Econometrics. 2nd ed. London: Macmillan, 1970.
Tohutoro MLA (9th ed.)WALTERS, A. A. An Introduction to Econometrics. 2nd ed. Macmillan, 1970.
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