APA (7th ed.) Citation

Beatles, Lennon, J., & McCartney, P. (1989). A hard day's night. Parlophone.

Chicago Style (17th ed.) Citation

Beatles, John Lennon, and Paul McCartney. A Hard Day's Night. [U.K.]: Parlophone, 1989.

MLA (9th ed.) Citation

Beatles, et al. A Hard Day's Night. Parlophone, 1989.