Lado, R. (1964). Language teaching: A scientific approach. Ta Ta McGraw- Hill.
Chicago-čujuhus (17. p.)Lado, Robert. Language Teaching: A Scientific Approach. NewDelhi: Ta Ta McGraw- Hill, 1964.
MLA-čujuhus (9. p.)Lado, Robert. Language Teaching: A Scientific Approach. Ta Ta McGraw- Hill, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.