Cita APA (7th ed.)

Fletcher, J. (1984). Information sources in economics (2nd ed.). Butterworths.

Cita Chicago (17th ed.)

Fletcher, John. Information Sources in Economics. 2nd ed. London ; Boston: Butterworths, 1984.

Cita MLA (9th ed.)

Fletcher, John. Information Sources in Economics. 2nd ed. Butterworths, 1984.