| Type |  Book |
| ชื่อเรื่อง | English now : upper intermediate / Paul Aston, Elizabeth Edmondson |
| ผู้แต่ง | Aston, Paul |
| ISBN | 0194333876 |
| | 019433385X (Student's book) |
| | 0194333868 (Workbook) |
| | 0194333876 (Teacher's book) |
| พิมพลักษณ์ | Oxford : Oxford University Press, 1989 |
| รูปเล่ม | 3 v. (122 ; 93 ; 99 p.) : ill. + 1 Cassette |
| หัวเรื่อง | English language --Textbooks for foreign speakers [] |
| | English language --Composition and exercises [] |
| | English language --Conversation and phrase books [] |
| | English language --Study and teaching [] |