The Princeton Language Institute

The Princeton Language Institute's books

10 Days to Faster Reading

3.84 avg rating — 3,713 ratings

10 Days to More Confident Public Speaking

3.76 avg rating — 95 ratings

21st Century Dictionary of Quotations

4.12 avg rating — 17 ratings

Roget's 21st Century Thesaurus

really liked it 4.00 avg rating — 14 ratings

10 Days to a More Powerful Vocabulary

4.36 avg rating — 11 ratings

Roget's 21st Century Thesaurus in Dictionary Form

4.22 avg rating — 9 ratings

21st Century Grammar Handbook (21st Century Reference)

3.80 avg rating — 5 ratings

21st-Century Spelling Dictionary (21st-Century Reference)

really liked it 4.00 avg rating — 1 rating

Ppk12mx 10 Days

really liked it 4.00 avg rating — 1 rating

21st Century Synonym and Antonym Finder

really liked it 4.00 avg rating — 1 rating