Schumm, S. A. (1972). River morphology. Stroudsburg, Pennsylvania : Dowden, Hutchinson and Ross.
Lua i Stíl Chicago (17ú heag.)Schumm, Stanley A. River Morphology. Stroudsburg, Pennsylvania : Dowden, Hutchinson and Ross, 1972.
Lua MLA (9ú heag.)Schumm, Stanley A. River Morphology. Stroudsburg, Pennsylvania : Dowden, Hutchinson and Ross, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.