APA (7th ed.) Zitazioa

STILWELL, J. (1975). Workbook to accompany the fourth edition: Of an introduction to positive economics. E.L.B.S. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Zitazioa

STILWELL, J.A. Workbook to Accompany the Fourth Edition: Of an Introduction to Positive Economics. London: E.L.B.S. Weidenfeld and Nicolson, 1975.

MLA (9th ed.) Zitazioa

STILWELL, J.A. Workbook to Accompany the Fourth Edition: Of an Introduction to Positive Economics. E.L.B.S. Weidenfeld and Nicolson, 1975.