- How to learn languages and what languages to learnMario Pei
- New Italian Self-TaughtMario Pei
- The story of the English languageMario Pei
- Talking your way around the worldMario Pei
- The story of Latin and the Romance languagesMario Pei
- The New World Spanish-English and English-Spanish dictionaryMario Pei, Salvatore Ramondino
- Weasel wordsMario Pei
- The families of wordsMario Pei
- Glossary of Linguistic TerminologyMario Pei
- A dictionary of linguisticsMario Pei
- Voices of manMario Pei
- The story of languageMario Pei
- Words in sheep's clothingMario Pei
- Mario PeiMario Pei
- Dictionary of LinguisticsMario Pei, Frank Gaynor
- All about languageMario Pei
- One language for the worldMario Pei
- Invitation to LinguisticsMario Pei
