APA (7th ed.) Citation

Flower, Berman, & Powell. (1989). Build your vocabulary 3. Language&Teaching Publication.

Chicago Style (17th ed.) Citation

Flower, Berman, and Powell. Build Your Vocabulary 3. Hove,England: Language&Teaching Publication, 1989.

MLA (9th ed.) Citation

Flower, et al. Build Your Vocabulary 3. Language&Teaching Publication, 1989.

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