APA (7th ed.) Citation

Eagle Rock Entertainment, Cromwell Productions, Films for the Humanities (Firm), & Freeston, J. (1999). The Celts. Films for the Humanities.

Chicago Style (17th ed.) Citation

Eagle Rock Entertainment, Cromwell Productions, Films for the Humanities (Firm), and Jeremy Freeston. The Celts. Princeton, NJ: Films for the Humanities, 1999.

MLA (9th ed.) Citation

Eagle Rock Entertainment, et al. The Celts. Films for the Humanities, 1999.