Griffin, W. E. B., & Butterworth, W. E. (2007). The double agents. G.P. Putnam's Sons.
Chicago Style aipamenaGriffin, W. E. B., and William E. Butterworth. The Double Agents. New York: G.P. Putnam's Sons, 2007.
MLA aipamenaGriffin, W. E. B., and William E. Butterworth. The Double Agents. G.P. Putnam's Sons, 2007.
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