Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
Hoyt, E. 2002. "Whale Watching". In Encyclopedia of Marine Mammals (Perrin, W.F., B. Würsig and J.G.M. Thewissen, eds.) Academic Press, San Diego, CA., pp. 1305-1310.
