Tower, E. (1981). Economics reading lists, course outlines, exams, puzzles and problems. Eno River Press.
Chicago-viite (17. p.)Tower, Edward. Economics Reading Lists, Course Outlines, Exams, Puzzles and Problems. Durham, North Carolina: Eno River Press, 1981.
MLA-viite (9. p.)Tower, Edward. Economics Reading Lists, Course Outlines, Exams, Puzzles and Problems. Eno River Press, 1981.
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