pei, m. (1981). The lexicon Webster dictionary: With a historical sketch of the English language. English-Language Institute of America.
Citazione stile Chigago Style (17a edizione)pei, mario. The Lexicon Webster Dictionary: With a Historical Sketch of the English Language. [Chicago]: English-Language Institute of America, 1981.
Citatione MLA (9a ed.)pei, mario. The Lexicon Webster Dictionary: With a Historical Sketch of the English Language. English-Language Institute of America, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.