APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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 -ийн эшлэл (9 дэх хэвлэлт)

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