APA (7th ed.) Citation

Williams, S. (1999). Focus on vocabulary. Cornelsen & Oxford.

Chicago Style (17th ed.) Citation

Williams, Steve. Focus on Vocabulary. Berlin: Cornelsen & Oxford, 1999.

MLA (8th ed.) Citation

Williams, Steve. Focus on Vocabulary. Cornelsen & Oxford, 1999.

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