Billows, F. L. (1961). The techniques of language teaching. Longman.
Chicago-čujuhus (17. p.)Billows, F. L. The Techniques of Language Teaching. London: Longman, 1961.
MLA-čujuhus (9. p.)Billows, F. L. The Techniques of Language Teaching. Longman, 1961.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.