Παραπομπή σε μορφή APA (7η εκδ.)

Tower, E. (1985). International economics exams, puzzles & problems: With additional reading lists. Eno River.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tower, Edward. International Economics Exams, Puzzles & Problems: With Additional Reading Lists. North Carolina: Eno River, 1985.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tower, Edward. International Economics Exams, Puzzles & Problems: With Additional Reading Lists. Eno River, 1985.