Tohutoro APA (7th ed.)
Emmerich, V. (1973). BGB-Schuldrecht. Müller.
Tohutoru Kātū Chicago (17th ed.)
Emmerich, Volker. BGB-Schuldrecht. Karlsruhe: Müller, 1973.
Tohutoro MLA (9th ed.)
Emmerich, Volker. BGB-Schuldrecht. Müller, 1973.
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