Boettcher, E. (1887). Orographie und Hydrographie des Kongobeckens. Naucke.
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Chicago Style (17th ed.) Citation
Boettcher, Ernst. Orographie Und Hydrographie Des Kongobeckens. Halle a.S: Naucke, 1887.
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MLA引文
Boettcher, Ernst. Orographie Und Hydrographie Des Kongobeckens. Naucke, 1887.
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警告：這些引文格式不一定是100％准確.