Reference books









Check out these key resources to help you with words, definitions, facts and figures.

Online dictionaries:

Macmillan Dictionary

Collins Dictionary

Online thesauruses:

Macmillan Thesaurus

Collins English Thesaurus

Other useful sources:

WolframAlpha: calculates and answers science and maths questions and much more

World Factbook

Infoplease: a US website, but full of useful information