Hahn, T., Csikos, D., Gearon, B., Vinas, T., Hardy, J., Bublic, J., Ondrusek, A., Perez, J., Chan, S., Sullivan, C., Ryan, P., Blazy, G., Sharkey, L., Pattison, M., & Henry, R. (1989). The Burr Spring 1989 (1–). https://oaks.kent.edu/node/5099
Hahn, T., D. Csikos, B. Gearon, T. Vinas, J. Hardy, J. Bublic, A. Ondrusek, et al. 1989. The Burr Spring 1989. https://oaks.kent.edu/node/5099.
Hahn, Tim, et al. The Burr Spring 1989. 1 Jan. 1989, https://oaks.kent.edu/node/5099.