MLA

Bischof, Anna, and Zuzana Jürgens. Voices of Freedom -- Western Interference? : 60 Years of Radio Free Europe. Göttingen: Vandenhoeck & Ruprecht, 2015.

APA

Bischof, A., & Jürgens, Z. (2015). Voices of Freedom -- Western interference? : 60 years of Radio Free Europe. Göttingen: Vandenhoeck & Ruprecht.

Chicago

Bischof, Anna, and Zuzana Jürgens. Voices of Freedom -- Western Interference?: 60 Years of Radio Free Europe. Göttingen: Vandenhoeck & Ruprecht, 2015.