Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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