BARLOW, C., & BRYAN, G. (1946). Elementary mathematical astronomy. University Tutorial Press.
Lua i Stíl Chicago (17ú heag.)BARLOW, CWC, agus G.H BRYAN. Elementary Mathematical Astronomy. London: University Tutorial Press, 1946.
Lua MLA (9ú heag.)BARLOW, CWC, agus G.H BRYAN. Elementary Mathematical Astronomy. University Tutorial Press, 1946.
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