Bienvenu, H. J., & Calderwood, J. D. (1961). Transportation, lifeline of America. Webster Pub. Co..
Lua i Stíl Chicago (17ú heag.)Bienvenu, Harold J., agus James D. Calderwood. Transportation, Lifeline of America. St. Louis, Mo.: Webster Pub. Co., 1961.
Lua MLA (8ú heag.)Bienvenu, Harold J., agus James D. Calderwood. Transportation, Lifeline of America. Webster Pub. Co., 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.