Gilbert, C., Luxenberg, G. A., & Tolon, M. (1990). Historic landscape report: Spalding Unit, Nez Perce National Historical Park, Idaho. U.S. Dept. of the Interior, National Park Service, Pacific Northwest Region, Cultural Resources Division.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Gilbert, Cathy, Gretchen A. Luxenberg, và Marsha Tolon. Historic Landscape Report: Spalding Unit, Nez Perce National Historical Park, Idaho. Seattle, Wash.: U.S. Dept. of the Interior, National Park Service, Pacific Northwest Region, Cultural Resources Division, 1990.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Gilbert, Cathy, et al. Historic Landscape Report: Spalding Unit, Nez Perce National Historical Park, Idaho. U.S. Dept. of the Interior, National Park Service, Pacific Northwest Region, Cultural Resources Division, 1990.