Cita APA (7a ed.)

Bullinger, C. E. (1958). Engineering economy (3a. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Bullinger, Clarence E. Engineering Economy. 3a. ed. New York: McGraw-Hill, 1958.

Cita MLA (9a ed.)

Bullinger, Clarence E. Engineering Economy. 3a. ed. McGraw-Hill, 1958.