Dyfyniad APA

Sandburg, H. (1958). The wheel of earth. McDowell, Obolensky.

Dyfyniad Arddull Chicago

Sandburg, Helga. The Wheel of Earth. [New York]: McDowell, Obolensky, 1958.

Dyfyniad MLA

Sandburg, Helga. The Wheel of Earth. McDowell, Obolensky, 1958.

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