CROSSLEY, J. N. (1969). Constructive order types. North-Holland.
Chicago-čujuhus (17. p.)CROSSLEY, John N. Constructive Order Types. Amsterdam: North-Holland, 1969.
MLA-čujuhus (9. p.)CROSSLEY, John N. Constructive Order Types. North-Holland, 1969.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.