Backpack (Starter) 2/e Workbook with Audio CD/1片
作者：Mario Herrera, Diane Pinkley
ISBN：9780132084833
Backpack (Starter) 2/e Teacher's Edition
ISBN：9780132084826
Backpack (Starter) 2/e Student Book
ISBN：9780132452014
Backpack (Starter) 2/e DVD/1片
ISBN：9780132084789
Backpack (Starter) 2/e Class Audio CDs/2片
ISBN：9780132084772
Backpack (6) 2/e Workbook with Audio CD/1片
ISBN：9780132451529
Backpack (6) 2/e Teacher's Edition
ISBN：9780132451666
Backpack (6) 2/e Student Book with CD/1片
ISBN：9780132450874
Backpack (6) 2/e DVD/1片
ISBN：9780132451628
Backpack (6) 2/e Class Audio CDs/2片
ISBN：9780132451604
Backpack (5~6) 2/e Picture Cards with Teacher's Activity Guide
ISBN：9780132451390
Backpack (5) 2/e Workbook with Audio CD/1片
ISBN：9780132450164
Backpack (5) 2/e Teacher's Edition
ISBN：9780132451536
Backpack (5) 2/e Student Book with CD/1片
ISBN：9780132450867
Backpack (5) 2/e DVD/1片
ISBN：9780132451567
