Tohutoro APA (7th ed.)

Ludwig, E. E. (1979). Applied process design for chemical and petrochemical plants (2a. ed.). Gulf Publishing Company.

Tohutoru Kātū Chicago (17th ed.)

Ludwig, Ernest E. Applied Process Design for Chemical and Petrochemical Plants. 2a. ed. Houston: Gulf Publishing Company, 1979.

Tohutoro MLA (9th ed.)

Ludwig, Ernest E. Applied Process Design for Chemical and Petrochemical Plants. 2a. ed. Gulf Publishing Company, 1979.