Lua APA (7ú heag.)

KREBS, R. D., & WALKER, R. D. (1971). Highway materials. McGraw-Hill.

Lua i Stíl Chicago (17ú heag.)

KREBS, Robert D., agus Richard D. WALKER. Highway Materials. New York: McGraw-Hill, 1971.

Lua MLA (9ú heag.)

KREBS, Robert D., agus Richard D. WALKER. Highway Materials. McGraw-Hill, 1971.

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