APA
Gillespie A., . (2011). Foundations of economics. Oxford: Oxford University Press.
Chicago
Gillespie Andrew, . 2011. Foundations of economics. Oxford: Oxford University Press.
Harvard
Gillespie A., . (2011). Foundations of economics. Oxford: Oxford University Press.
MLA
Gillespie Andrew, . Foundations of economics. Oxford: Oxford University Press. 2011.