Παραπομπή APA
Vickerman, R. W., & Flowerdew, A. D. J. (1990). The channel tunnel: The economic and regional impact. London: The Economist Intelligence Unit.
Παραπομπή Chicago StyleVickerman, Roger William., and Anthony D. J. Flowerdew. The Channel Tunnel: The Economic and Regional Impact. London: The Economist Intelligence Unit, 1990.
Παραπομπή MLAVickerman, Roger William., and Anthony D. J. Flowerdew. The Channel Tunnel: The Economic and Regional Impact. London: The Economist Intelligence Unit, 1990.
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