Room, T. G. (1967). Background to geometry ( natural, synthetic and algebraic). Cambridge University Press.
Chicago-viite (17. p.)Room, T. G. Background to Geometry ( Natural, Synthetic and Algebraic). Cambridge: Cambridge University Press, 1967.
MLA-viite (9. p.)Room, T. G. Background to Geometry ( Natural, Synthetic and Algebraic). Cambridge University Press, 1967.
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