Cita APA (7a ed.)
Hougen, O. A. (1947). Chemical process principles. Wiley.
Cita estilo Chicago (17a ed.)
Hougen, Olaf A. Chemical Process Principles. Nueva York, EUA: Wiley, 1947.
Cita MLA (9a ed.)
Hougen, Olaf A. Chemical Process Principles. Wiley, 1947.
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