Sobolewski, V. (1969). Untitled Illustration 5 (1–). https://oaks.kent.edu/node/8714
Sobolewski, Valori. 1969. “Untitled Illustration 5”. https://oaks.kent.edu/node/8714.
Sobolewski, Valori. Untitled Illustration 5. 1 Jan. 1969, https://oaks.kent.edu/node/8714.