Etherton, A. (1968). Objective english tests intermediate level. Longman.
Chicago-čujuhus (17. p.)Etherton, A.R.B. Objective English Tests Intermediate Level. London: Longman, 1968.
MLA-čujuhus (9. p.)Etherton, A.R.B. Objective English Tests Intermediate Level. Longman, 1968.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.