Parta, R. E. (2007). Discovering the hidden listener: An assessment of Radio Liberty and western broadcasting to the USSR during the Cold War : a study based on audience research findings, 1970-1991. Hoover Institution Press.

Parta, R. Eugene. Discovering the Hidden Listener: An Assessment of Radio Liberty and Western Broadcasting to the USSR During the Cold War : A Study Based on Audience Research Findings, 1970-1991. Stanford, Calif.: Hoover Institution Press, 2007.

Parta, R. Eugene. Discovering the Hidden Listener: An Assessment of Radio Liberty and Western Broadcasting to the USSR During the Cold War : A Study Based on Audience Research Findings, 1970-1991. Hoover Institution Press, 2007.