CAMERON ESTHER. (1998). FACILITATION MADE EASY. KOGAN PAGE.
Chicago-čujuhus (17. p.)CAMERON ESTHER. FACILITATION MADE EASY. LONDON: KOGAN PAGE, 1998.
MLA-čujuhus (9. p.)CAMERON ESTHER. FACILITATION MADE EASY. KOGAN PAGE, 1998.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.