APA استشهاد

Ellsworth P T & Leith J Clark. (1975). International economy/5e (5th ed.). Macmillan.

استشهاد بنمط شيكاغو

Ellsworth P T و Leith J Clark. International Economy/5e. 5th ed. New York: Macmillan, 1975.

MLA استشهاد

Ellsworth P T و Leith J Clark. International Economy/5e. 5th ed. Macmillan, 1975.