Pittman, G. (1966). Activating advanced english vocabulary. Longmans.
Chicago-čujuhus (17. p.)Pittman, G.A. Activating Advanced English Vocabulary. London: Longmans, 1966.
MLA-čujuhus (9. p.)Pittman, G.A. Activating Advanced English Vocabulary. Longmans, 1966.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.