APA (7th ed.) Citation

Ritchie, R. J., Wildman, A. M., & Yokel, D. A. (2003). Aerial surveys of cliff-nesting raptors in the National Petroleum Reserve--Alaska, 1999, with comparisons to 1977. U.S. Dept. of the Interior, Bureau of Land Management.

Chicago Style (17th ed.) Citation

Ritchie, Robert J., Ann Marie Wildman, and David A. Yokel. Aerial Surveys of Cliff-nesting Raptors in the National Petroleum Reserve--Alaska, 1999, with Comparisons to 1977. Fairbanks, Alaska: U.S. Dept. of the Interior, Bureau of Land Management, 2003.

MLA (9th ed.) Citation

Ritchie, Robert J., et al. Aerial Surveys of Cliff-nesting Raptors in the National Petroleum Reserve--Alaska, 1999, with Comparisons to 1977. U.S. Dept. of the Interior, Bureau of Land Management, 2003.