Morris ,J.H.C. (1962). Rule Against Perpetuities (2nd.). Steven & Sons.
Chicago-čujuhus (17. p.)Morris ,J.H.C. Rule Against Perpetuities. 2nd. London: Steven & Sons, 1962.
MLA-čujuhus (9. p.)Morris ,J.H.C. Rule Against Perpetuities. 2nd. Steven & Sons, 1962.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.