448005 Blumenthal, L. M., & Menger, K. (1970). Studies in geometry. San Francisco : W H Freeman.
Chicago-čujuhus (17. p.)448005 Blumenthal, Leonard Mascot, juo Karl Menger. Studies in Geometry. San Francisco : W H Freeman, 1970.
MLA-čujuhus (9. p.)448005 Blumenthal, Leonard Mascot, juo Karl Menger. Studies in Geometry. San Francisco : W H Freeman, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.