Benjamin, R. F. (2001). Spills and ripples. United State: AIMS Education Foundation.
Trích dẫn kiểu ChicagoBenjamin, Robert F. Spills and Ripples. United State: AIMS Education Foundation, 2001.
MLA citiranjeBenjamin, Robert F. Spills and Ripples. United State: AIMS Education Foundation, 2001.
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