APA (7. basım) Alıntı
(1951). The Physical Features of Washington County. Dept.of geology,mines and water resources.
Chicago Style (17. basım) Atıf
The Physical Features of Washington County. Baltimore: Dept.of geology,mines and water resources, 1951.
MLA (9th ed.) Atıf
The Physical Features of Washington County. Dept.of geology,mines and water resources, 1951.
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