Ulmer, M. J. (1965). Economics: Theory and practice. Houghton Mifflin.
Chicago Edition CitationUlmer, Melville J. Economics: Theory and Practice. Boston: Houghton Mifflin, 1965.
Cita MLAUlmer, Melville J. Economics: Theory and Practice. Houghton Mifflin, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.