APA (7th ed.) Citation

Rugh, D. J., Shelden, K. E. W., & Withrow, D. E. (1997). Spotted Seals, Phoca largha, in Alaska.

Chicago Style (17th ed.) Citation

Rugh, David J., Kim E. W. Shelden, and David E. Withrow. Spotted Seals, Phoca Largha, in Alaska. 1997.

MLA (9th ed.) Citation

Rugh, David J., et al. Spotted Seals, Phoca Largha, in Alaska. 1997.