APA (7th ed.) Citation

Wlassics, A. v., & Wlassics, O. v. (1941). Mappe. Arnold.

Chicago Style (17th ed.) Citation

Wlassics, Aderjan von, and Olga von Wlassics. Mappe. Berlin: Arnold, 1941.

MLA (9th ed.) Citation

Wlassics, Aderjan von, and Olga von Wlassics. Mappe. Arnold, 1941.