APA (7th ed.) Citation

HOPKINS, A., & POTTER, J. Work in progress: Course book. Longman.

Chicago Style (17th ed.) Citation

HOPKINS, ANDY, and JOCELYN POTTER. Work in Progress: Course Book. London: Longman.

MLA (8th ed.) Citation

HOPKINS, ANDY, and JOCELYN POTTER. Work in Progress: Course Book. Longman.

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