LIPSEY, R. G. (1975). Economics. Harper & Row.
Chicago Style (17th ed.) ZitazioaLIPSEY, Richard G. Economics. New York: Harper & Row, 1975.
MLA (9th ed.) ZitazioaLIPSEY, Richard G. Economics. Harper & Row, 1975.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.