Learners

Basic English Grammar: For English Language Learners: Book 2

Howard Sargeant

Head First SQL: Your Brain on SQL -- A Learner's Guide

Lynn Beighley

test your english vocabulary in use - upper-intermediate

Cambridge Advanced Learner's Dictionary

Colin McIntosh (Ed.)

Mastering Arabic Vocabulary: For Intermediate to Advanced Learners of Modern Standard Arabic

Nadia R. Sirhan