Spain, B. (1960). Analytical quadratics. Pergamon Press.
Chicago-čujuhus (17. p.)Spain, Barry. Analytical Quadratics. Nueva York: Pergamon Press, 1960.
MLA-čujuhus (9. p.)Spain, Barry. Analytical Quadratics. Pergamon Press, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.