記錄引文
APA引文
Kettler J. I. & Muller Herm. (19). Karte von Afrika. Geographischen Institut.
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Chicago Style (17th ed.) Citation
Kettler J. I. and Muller Herm. Karte Von Afrika. Geographischen Institut, 19.
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MLA引文
Kettler J. I. and Muller Herm. Karte Von Afrika. Geographischen Institut, 19.
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警告：這些引文格式不一定是100％准確.