Juusela, E., & Penttilä, V. (1961). Billroth II gastrectomy in the treatment of gastroduodenal ulcer: A clinical based on 725 cases. Duodecim.
Lua i Stíl Chicago (17ú heag.)Juusela, Eero, agus V. Penttilä. Billroth II Gastrectomy in the Treatment of Gastroduodenal Ulcer: A Clinical Based on 725 Cases. Helsinki: Duodecim, 1961.
Lua MLA (8ú heag.)Juusela, Eero, agus V. Penttilä. Billroth II Gastrectomy in the Treatment of Gastroduodenal Ulcer: A Clinical Based on 725 Cases. Duodecim, 1961.
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