Gaya APA

Dulles, A. (2016). The Craft of Intelligence: America's Legendary Spy Master on the Fundamentals of Intelligence Gathering for a Free World . -: Lyons Press.

Gaya MLA

Dulles, Allen. "The Craft of Intelligence: America's Legendary Spy Master on the Fundamentals of Intelligence Gathering for a Free World". -: Lyons Press, 2016. Text.