BEASLEY, R., GREGORY, J. M., & MCCARTY, T. R. (1984). Erosion and sediment pollution control.-- Ed.2. Iowa State University.
Lua i Stíl Chicago (17ú heag.)BEASLEY, R.P, James M. GREGORY, agus Thomas R. MCCARTY. Erosion and Sediment Pollution Control.-- Ed.2. Iowa: Iowa State University, 1984.
Lua MLA (9ú heag.)BEASLEY, R.P, et al. Erosion and Sediment Pollution Control.-- Ed.2. Iowa State University, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.