Cita APA (7th ed.)

Perman, R., & Scouller, J. (1999). Business economics. Oxford University Press.

Cita Chicago (17th ed.)

Perman, Roger, i John Scouller. Business Economics. Oxford: Oxford University Press, 1999.

Cita MLA (9th ed.)

Perman, Roger, i John Scouller. Business Economics. Oxford University Press, 1999.