Roberts, O. (1981). About Miss Muffett (1–). https://oaks.kent.edu/node/8811
Roberts, Opal. 1981. “About Miss Muffett”. https://oaks.kent.edu/node/8811.
Roberts, Opal. About Miss Muffett. 1 Jan. 1981, https://oaks.kent.edu/node/8811.