Owalow, L., & Menke, H. (1964). Der Messingknopf: Spionageroman (51.bis 75. Tausend.). Kultur & Fortschritt.
Chicago Style (17th ed.) CitationOwalow, Lew, and Hannelore Menke. Der Messingknopf: Spionageroman. 51.bis 75. Tausend. Berlin: Kultur & Fortschritt, 1964.
MLA (8th ed.) CitationOwalow, Lew, and Hannelore Menke. Der Messingknopf: Spionageroman. 51.bis 75. Tausend. Kultur & Fortschritt, 1964.
Warning: These citations may not always be 100% accurate.