Esterer, A. (1973). Dr. Frank Vineyard Visit, 1973. https://oaks.kent.edu/node/3428
Esterer, Arnulf. 1973. “Dr. Frank Vineyard Visit, 1973”. https://oaks.kent.edu/node/3428.
Esterer, A. Dr. Frank Vineyard Visit, 1973. 8 Dec. 1973, https://oaks.kent.edu/node/3428.