Cita APA (7th ed.)

Ludwig, E. E. (1964). Applied process design: For chemical and petrochemical plants. Gulf Publishing Company.

Cita Chicago (17th ed.)

Ludwig, Ernest E. Applied Process Design: For Chemical and Petrochemical Plants. Houston: Gulf Publishing Company, 1964.

Cita MLA (9th ed.)

Ludwig, Ernest E. Applied Process Design: For Chemical and Petrochemical Plants. Gulf Publishing Company, 1964.