Gill, R. T. (1978). Economics: A Text with Readings (3rd. ed.). Goodyear.
Cita Chicago Style (17a ed.)Gill, Richard T. Economics: A Text with Readings. 3rd. ed. California: Goodyear, 1978.
Cita MLA (9a ed.)Gill, Richard T. Economics: A Text with Readings. 3rd. ed. Goodyear, 1978.
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