APA (7th ed.) Citation

Shannon, E., & Blackman, A. (2002). The spy next door : the extraordinary secret life of Robert Philip Hanssen, the most damaging FBI agent in U.S. history / Elaine Shannon and Ann Blackman: The extraordinary secret life of Robert Philip Hanssen, the most damaging FBI agent in U.S. history. Little, Brown.

Chicago Style (17th ed.) Citation

Shannon, Elaine, and Ann Blackman. The Spy Next Door : The Extraordinary Secret Life of Robert Philip Hanssen, the Most Damaging FBI Agent in U.S. History / Elaine Shannon and Ann Blackman: The Extraordinary Secret Life of Robert Philip Hanssen, the Most Damaging FBI Agent in U.S. History. Boston: Little, Brown, 2002.

MLA (9th ed.) Citation

Shannon, Elaine, and Ann Blackman. The Spy Next Door : The Extraordinary Secret Life of Robert Philip Hanssen, the Most Damaging FBI Agent in U.S. History / Elaine Shannon and Ann Blackman: The Extraordinary Secret Life of Robert Philip Hanssen, the Most Damaging FBI Agent in U.S. History. Little, Brown, 2002.

Warning: These citations may not always be 100% accurate.