TY  - BOOK
AU  - Jean Andrews et.al 
TI  - CompTIA A+ core 1 exam guide to computing infrastructure  
SN  - 13: 978-0-357-10837-6
U1  - Cir. 621.39 AN565 C2020 
PY  - 2020///
CY  - Boston, USA
PB  - Cengage learning 
ER  -