Fisher, D. (1963). Graded comprehension for advanced students. Longman.
Chicago-čujuhus (17. p.)Fisher, David. Graded Comprehension for Advanced Students. London: Longman, 1963.
MLA-čujuhus (9. p.)Fisher, David. Graded Comprehension for Advanced Students. Longman, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.