Pfeiffer, P. (1991). Grandma (1–). https://oaks.kent.edu/node/8897
Pfeiffer, Phyllis. 1991. “Grandma”. https://oaks.kent.edu/node/8897.
Pfeiffer, Phyllis. Grandma. 1 Jan. 1991, https://oaks.kent.edu/node/8897.