Longman. (2002). Language Activator: Helps You Write And Speak Natural English (2nd.). Pearson.
Chicago-čujuhus (17. p.)Longman. Language Activator: Helps You Write And Speak Natural English. 2nd. Delhi: Pearson, 2002.
MLA-čujuhus (9. p.)Longman. Language Activator: Helps You Write And Speak Natural English. 2nd. Pearson, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.