pei, m. (1981). The lexicon Webster dictionary: With a historical sketch of the English language. English-Language Institute of America.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিpei, mario. The Lexicon Webster Dictionary: With a Historical Sketch of the English Language. [Chicago]: English-Language Institute of America, 1981.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিpei, mario. The Lexicon Webster Dictionary: With a Historical Sketch of the English Language. English-Language Institute of America, 1981.