APA (7th ed.) Citation

Gupta Nikhil. (2023). Black Book of English Vocabulary. Gupta Edu Tech.

Chicago Style (17th ed.) Citation

Gupta Nikhil. Black Book of English Vocabulary. Gupta Edu Tech, 2023.

MLA (9th ed.) Citation

Gupta Nikhil. Black Book of English Vocabulary. Gupta Edu Tech, 2023.

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