SOURCES

Sources:
1.-https://www.youtube.com/user/CALLOFDUTY
2.-https://es.wikipedia.org/wiki/Call_of_Duty

3.-https://www.callofduty.com/es/

4.--https://www.callofduty.com/es/blackops3

5.-articulos.softonic.com/call-of-duty-black-ops-3-guia-especialistas

6.-www.pcgamesn.com/.../call-of-duty-black-ops-3-zo...