Cita APA (7th ed.)

Hougen, O. A., Watson, K. M., & Ragatz, R. A. (1954). Chemical process principles (2a. ed.). John Wiley.

Cita Chicago (17th ed.)

Hougen, O. A., Kenneth Merle Watson, i Roland A. Ragatz. Chemical Process Principles. 2a. ed. Nueva York: John Wiley, 1954.

Cita MLA (9th ed.)

Hougen, O. A., et al. Chemical Process Principles. 2a. ed. John Wiley, 1954.