Janus Films, Criterion Collection (Firm), Anglo American Film Corporation, British Broadcasting Corporation, Powell, M., Howard, L., . . . Vaughan Williams, R. (2007). 49th parallel. Criterion Collection.
Cita Chicago Style (17a ed.)Janus Films, et al. 49th Parallel. [Irvington, NY]: Criterion Collection, 2007.
Cita MLA (8a ed.)Janus Films, et al. 49th Parallel. Criterion Collection, 2007.
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