Clayton, G. E., Giesbrecht, M. G., & Guo, F. (2010). A guide to everyday economic statistics (7th ed.). McGraw-Hill Higher Education.
Cita Chicago (17th ed.)Clayton, Gary E., Martin Gerhard Giesbrecht, i Feng Guo. A Guide to Everyday Economic Statistics. 7th ed. New York: McGraw-Hill Higher Education, 2010.
Cita MLA (9th ed.)Clayton, Gary E., et al. A Guide to Everyday Economic Statistics. 7th ed. McGraw-Hill Higher Education, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.