Institute For Scientific Co-operation. (1980). Economics. Laupp & Gobel, Tubingen.
Chicago Style (17. basım) AtıfInstitute For Scientific Co-operation. Economics. Federal Republic of Germany: Laupp & Gobel, Tubingen, 1980.
MLA (9th ed.) AtıfInstitute For Scientific Co-operation. Economics. Laupp & Gobel, Tubingen, 1980.