BBC & Boswall, J. (1969). Look: A selection from the BBC-tv natural history series. British Broadcasting Corporation.
Cita Chicago Style (17a ed.)BBC y Jeffery Boswall. Look: A Selection from the BBC-tv Natural History Series. London: British Broadcasting Corporation, 1969.
Cita MLA (9a ed.)BBC y Jeffery Boswall. Look: A Selection from the BBC-tv Natural History Series. British Broadcasting Corporation, 1969.
Precaución: Estas citas no son 100% exactas.