Não informado. (1967). Colloquia Germanica. University of Kentucky, Department of Germanic and Classical Languages and Literatures.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Colloquia Germanica. Bern: University of Kentucky, Department of Germanic and Classical Languages and Literatures, 1967.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Colloquia Germanica. University of Kentucky, Department of Germanic and Classical Languages and Literatures, 1967.
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