APA (7th ed.) Citation

Patrick Hanks. (1991). Collins English Dictionary (3rd ed.). Harper Collins.

Chicago Style (17th ed.) Citation

Patrick Hanks. Collins English Dictionary. 3rd ed. Glasgow: Harper Collins, 1991.

MLA (9th ed.) Citation

Patrick Hanks. Collins English Dictionary. 3rd ed. Harper Collins, 1991.

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