Hebersack, H. (2008). Gravel bed rivers VI: From process understanding to river restoration. Elsevier.
शिकागो स्टाइल उद्धरणHebersack, Helmut. Gravel Bed Rivers VI: From Process Understanding to River Restoration. Amsterdam: Elsevier, 2008.
एमएलए उद्धरणHebersack, Helmut. Gravel Bed Rivers VI: From Process Understanding to River Restoration. Elsevier, 2008.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.