Washington (State). Forest Practices Board, Washington (State). Forest Practices Board. Spotted Owl Science Advisory Group, & Hanson, E. (1993). Spotted owl habitat in Washington: A report to the Washington Forest Practices Board. Washington Forest Practices Board?.
Style de citation Chicago (17e éd.)Washington (State). Forest Practices Board, Washington (State). Forest Practices Board. Spotted Owl Science Advisory Group, et Eric Hanson. Spotted Owl Habitat in Washington: A Report to the Washington Forest Practices Board. [Olympia, Wash.?: Washington Forest Practices Board?, 1993.
Style de citation MLA (8e éd.)Washington (State). Forest Practices Board, et al. Spotted Owl Habitat in Washington: A Report to the Washington Forest Practices Board. Washington Forest Practices Board?, 1993.