Παραπομπή σε μορφή APA (7η εκδ.)

Zoffer, G. R. (1980). Economic sanity or collapse: Including the Roman-Loebl approach to economics. McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zoffer, Gerald R. Economic Sanity or Collapse: Including the Roman-Loebl Approach to Economics. New York: McGraw-Hill, 1980.

Παραπομπή σε μορφή MLA (9th εκδ.)

Zoffer, Gerald R. Economic Sanity or Collapse: Including the Roman-Loebl Approach to Economics. McGraw-Hill, 1980.