APA (7th ed.) Citation

Collis, H. (1986). 101 American english idioms: Understanding and speaking English like an American. Passport Books.

Chicago Style (17th ed.) Citation

Collis, Harry. 101 American English Idioms: Understanding and Speaking English like an American. Chicago: Passport Books, 1986.

MLA (9th ed.) Citation

Collis, Harry. 101 American English Idioms: Understanding and Speaking English like an American. Passport Books, 1986.

Warning: These citations may not always be 100% accurate.