Schoenen, D. (1985). Drinking Water Materials Field Observations And Methods Of Investigation D Schoenen And H.f. Scholer. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Schoenen, D. Drinking Water Materials Field Observations And Methods Of Investigation D Schoenen And H.f. Scholer. John Wiley & Sons, 1985.
Lua MLA (8ú heag.)Schoenen, D. Drinking Water Materials Field Observations And Methods Of Investigation D Schoenen And H.f. Scholer. John Wiley & Sons, 1985.
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