Thomas, A. (1973). A practical English Grammar- Ex- I to VI. Oxford University Press.
Chicago-čujuhus (17. p.)Thomas, A. A Practical English Grammar- Ex- I to VI. London: Oxford University Press, 1973.
MLA-čujuhus (9. p.)Thomas, A. A Practical English Grammar- Ex- I to VI. Oxford University Press, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.