Schofield, K. (1967). Hetero-aromatic nitrogen compounds: Pyrroles and pyridines. Butterworths.
Lua i Stíl Chicago (17ú heag.)Schofield, Kenneth. Hetero-aromatic Nitrogen Compounds: Pyrroles and Pyridines. London: Butterworths, 1967.
Lua MLA (9ú heag.)Schofield, Kenneth. Hetero-aromatic Nitrogen Compounds: Pyrroles and Pyridines. Butterworths, 1967.
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