Kuhn, H. P., & Kassner, G. (2013). Hans Peter Kuhn - Flags: With photos by Gerhard Kassner. ruksaldruck.
Chicago Style (17. basım) AtıfKuhn, Hans Peter, ve Gerhard Kassner. Hans Peter Kuhn - Flags: With Photos by Gerhard Kassner. Berlin: ruksaldruck, 2013.
MLA (8th ed.) AtıfKuhn, Hans Peter, ve Gerhard Kassner. Hans Peter Kuhn - Flags: With Photos by Gerhard Kassner. ruksaldruck, 2013.
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