Callahan, L. (1993). Grumbling Grandma (1–). https://oaks.kent.edu/node/8996
Callahan, Laura. 1993. “Grumbling Grandma”. https://oaks.kent.edu/node/8996.
Callahan, Laura. Grumbling Grandma. 1 Jan. 1993, https://oaks.kent.edu/node/8996.