Dyfyniad APA

Herschel, S. J. F. W. (1901). Outlines of astronomy. Collier and Son.

Dyfyniad Arddull Chicago

Herschel, Sir John Frederick William. Outlines of Astronomy. New York: Collier and Son, 1901.

Dyfyniad MLA

Herschel, Sir John Frederick William. Outlines of Astronomy. Collier and Son, 1901.

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