Boisen, H. B. (1882). Preparatory book of German prose. Ginn, Heath, and Company.
Chicago-viite (17. p.)Boisen, Hermann B. Preparatory Book of German Prose. Boston: Ginn, Heath, and Company, 1882.
MLA-viite (8. p.)Boisen, Hermann B. Preparatory Book of German Prose. Ginn, Heath, and Company, 1882.
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