Soper, M. E. (2017). CompTIA A+ 220-901 and 220-902 cert guide (4th edition.). Pearson.
Cita Chicago Style (17a ed.)Soper, Mark Edward. CompTIA A+ 220-901 and 220-902 Cert Guide. 4th edition. Indianapolis, Indiana: Pearson, 2017.
Cita MLA (9a ed.)Soper, Mark Edward. CompTIA A+ 220-901 and 220-902 Cert Guide. 4th edition. Pearson, 2017.
Precaución: Estas citas no son 100% exactas.