Tohutoro APA (7th ed.)
Backes-Gellner, U., & Helberger, C. (1989). Okonomie der Hochschule. Duncker & Humblot.
Tohutoru Kātū Chicago (17th ed.)
Backes-Gellner, Uschi, me Christof Helberger. Okonomie Der Hochschule. Berlin: Duncker & Humblot, 1989.
Tohutoro MLA (9th ed.)
Backes-Gellner, Uschi, me Christof Helberger. Okonomie Der Hochschule. Duncker & Humblot, 1989.
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