Cita APA (7a ed.)

Peak, R. (1991). Workbook: To accompany An introduction to modern economics (2nd ed.). Longman.

Cita Chicago Style (17a ed.)

Peak, Robin. Workbook: To Accompany An Introduction to Modern Economics. 2nd ed. London [etc.]: Longman, 1991.

Cita MLA (9a ed.)

Peak, Robin. Workbook: To Accompany An Introduction to Modern Economics. 2nd ed. Longman, 1991.