Zimmerman, T. (1974). Untitled Illustration 1 (1–). https://oaks.kent.edu/node/9209
Zimmerman, Tim. 1974. “Untitled Illustration 1”. https://oaks.kent.edu/node/9209.
Zimmerman, Tim. Untitled Illustration 1. 1 Jan. 1974, https://oaks.kent.edu/node/9209.