Cita APA

Shields, C. D., & Shields, C. D. (1961). Boilers: Types, characteristics, and functions. New York, New York: McGraw-Hill.

Citación estilo Chicago

Shields, Carl D., y Carl D. Shields. Boilers: Types, Characteristics, and Functions. New York, New York: McGraw-Hill, 1961.

Cita MLA

Shields, Carl D., y Carl D. Shields. Boilers: Types, Characteristics, and Functions. New York, New York: McGraw-Hill, 1961.