TY  - BOOK
AU  - Chappell,Patricia
AU  - Lloyd,Mark
TI  - PET direct: teacher's book 
T2  - Cambridge Books for Cambridge Exams
SN  - 9780521167161
PY  - 2010///]
CY  - Cambridge
PB  - Cambridge University Press, cop.
KW  - English language
KW  - Examinations, questions, etc
KW  - Textbooks for foreign speakers
KW  - Study and teaching
KW  - Foreign speakers
ER  -