(1993). Americans' Use of Time, 1985 John Robinson. [electronic resource].
Chicago-čujuhus (17. p.)Americans' Use of Time, 1985 John Robinson. [electronic Resource]. 1993.
MLA-čujuhus (9. p.)Americans' Use of Time, 1985 John Robinson. [electronic Resource]. 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.