Lua APA (7ú heag.)

Allen, C. F. 1., & Allen, C. f. 1. (1959). Railroad curves and earthwork (7th ed.). McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

Allen, Calvin Francis 1851, agus Calvin francis 1851 Allen. Railroad Curves and Earthwork. 7th ed. New York: McGraw-Hill, 1959.

Lua MLA (9ú heag.)

Allen, Calvin Francis 1851, agus Calvin francis 1851 Allen. Railroad Curves and Earthwork. 7th ed. McGraw-Hill, 1959.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.