Nadja Spiegelman
| Item | Date | Publisher | Price | Role |
|---|---|---|---|---|
| Zig And Wikki in The Cow | April 11, 2018 | Toon Books | $6.99 | Writer |
| Zig and Wikki: Something Ate My Homework | Aug. 21, 2013 | Random House | $4.99 | Writer |
| Zig And Wikki in The Cow | Feb. 22, 2012 | Toon Books | Unknown | Writer |
