Cita APA (7th ed.)

Riggs, J. L. (1982). Essentials of engineering economics. McGraw-Hill.

Cita Chicago (17th ed.)

Riggs, James L. Essentials of Engineering Economics. New York: McGraw-Hill, 1982.

Cita MLA (9th ed.)

Riggs, James L. Essentials of Engineering Economics. McGraw-Hill, 1982.