Clayton, G. E., & Giesbrecht, M. G. (1997). A guide to everyday economic statistics (4th ed.). Boston: McGraw-Hill Irwin.
Chicago Style aipamenaClayton, Gary E., và Martin Gerhard Giesbrecht. A Guide to Everyday Economic Statistics. 4th ed. Boston: McGraw-Hill Irwin, 1997.
MLA aipamenaClayton, Gary E., và Martin Gerhard Giesbrecht. A Guide to Everyday Economic Statistics. 4th ed. Boston: McGraw-Hill Irwin, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.