A+ OS Exam E-Books

ExamInsight for CompTIA A+
Operating System Technology Exam
by  Tcat Houser, 
     Helen O'Boyle

ExamWise for CompTIA A+
Operating System Technology Exam
by  Tcat Houser, 
     Helen O'Boyle

ExamInsight for A+ OS Hardware Exam

ExamWise for A+ OS Hardware Exam

Book Description: Amazon  Book Description: Amazon 

Note:
Although these E-Books are written for 220-222 exam, they are still good references for A+ OS 2003 objectives exam.