Columbia subject headings:
Call centers--Mexico--Mexico City--Employees.
Call centers--Mexico--Mexico City--Personnel management.
Contracting out--Mexico--Mexico City.
Mexico City (Mexico)--Commercial policy.
Harvard subject headings:
Call centers--Mexico--Mexico City--Employees.
Call centers--Mexico--Mexico City--Personnel management.
Contracting out--Mexico--Mexico City.
Mexico City (Mexico)--Commercial policy.
Princeton subject headings:
Call centers--Mexico--Mexico City--Employees.
Call centers--Mexico--Mexico City--Personnel management.
Contracting out--Mexico--Mexico City.
Mexico City (Mexico)--Commercial policy.