Gray, A.E. & Mulligan, T.J. & Hannah, R.W. (1997)
Food habits, occurrence, and population structure of the bat ray, Myliobatis californica, in Humboldt Bay, California. Environmental Biology of Fishes, 49(2), 227–238
DOI: 10.1023/A:1007379606233

Snelson, F.F. & Mulligan, T.J. & Williams, S.E. (1984)
Food Habits, Occurrence, and Population Structure of the Bull Shark, Carcharhinus Leucas, in Florida Coastal Lagoons. Bulletin of Marine Science, 34(1), 71–80