Derrett, J. (1999). Introduction To Legal Systems. Universal Law Publishing.
Chicago-čujuhus (17. p.)Derrett, J.D.M. Introduction To Legal Systems. Delhi: Universal Law Publishing, 1999.
MLA-čujuhus (9. p.)Derrett, J.D.M. Introduction To Legal Systems. Universal Law Publishing, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.