Columbia subject headings:
Harvard subject headings:
Communication, International.
English language--English-speaking countries.
English language--Foreign countries
English language--Foreign elements
English language--Influence on foreign languages
English language--Variation--English-speaking countries
English language--Variation--Foreign countries
English-speaking countries
Intercultural communication.
Reference works.
Princeton subject headings:
English language--English-speaking countries.
English language--Foreign countries.
English language--Variation.