Clayton, G. E., & Giesbrecht, M. G. (1997). A guide to everyday economic statistics (4th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Clayton, Gary E., agus Martin Gerhard Giesbrecht. A Guide to Everyday Economic Statistics. 4th ed. New York: McGraw-Hill, 1997.
Lua MLA (9ú heag.)Clayton, Gary E., agus Martin Gerhard Giesbrecht. A Guide to Everyday Economic Statistics. 4th ed. McGraw-Hill, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.