United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, Texas Transportation Institute, & Fitzpatrick, K. (2001). Evaluation of bus bulbs. National Academy Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)United States. Federal Transit Administration, Transit Cooperative Research Program, Transit Development Corporation, National Research Council (U.S.). Transportation Research Board, Texas Transportation Institute, và Kay Fitzpatrick. Evaluation of Bus Bulbs. Washington, D.C: National Academy Press, 2001.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)United States. Federal Transit Administration, et al. Evaluation of Bus Bulbs. National Academy Press, 2001.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.