1 |  | Skillbuilder : Vol.1 : Standards-based edition . - Australia : Heinle & Heinle , 2001. - XU,142 tr ; 28 cm. - ( Voices in literature ) Thông tin xếp giá: N/400/A.001806 |
2 |  | Skillbuilder : Vol.2 : Standards-based edition . - Australia : Heinle & Heinle , 2001. - XIX,140 p ; 28 cm. - ( Voices in literature ) Thông tin xếp giá: N/400/A.001805 |