Dyfyniad APA

BARLOW, C., & BRYAN, G. (1946). Elementary mathematical astronomy. University Tutorial Press.

Dyfyniad Arddull Chicago

BARLOW, CWC, and G.H BRYAN. Elementary Mathematical Astronomy. London: University Tutorial Press, 1946.

Dyfyniad MLA

BARLOW, CWC, and G.H BRYAN. Elementary Mathematical Astronomy. University Tutorial Press, 1946.

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