LIVINGSTON, G. F. (1960). Learn arithmetic: The easy way. Greystone Press.
Chicago-čujuhus (17. p.)LIVINGSTON, Gilbert F. Learn Arithmetic: The Easy Way. Cambridge: Greystone Press, 1960.
MLA-čujuhus (9. p.)LIVINGSTON, Gilbert F. Learn Arithmetic: The Easy Way. Greystone Press, 1960.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.