APA (7th ed.) Citation

Hobson, A. The Oxford Dictionary Dificult Words. Oxford University.

Chicago Style (17th ed.) Citation

Hobson, Archie. The Oxford Dictionary Dificult Words. Oxford University.

MLA (9th ed.) Citation

Hobson, Archie. The Oxford Dictionary Dificult Words. Oxford University.

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