Institute For Scientific Co-operation. (1980). Economics. Laupp & Gobel, Tubingen.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Institute For Scientific Co-operation. Economics. Federal Republic of Germany: Laupp & Gobel, Tubingen, 1980.
MLA -ийн эшлэл (9 дэх хэвлэлт)Institute For Scientific Co-operation. Economics. Laupp & Gobel, Tubingen, 1980.