Cita APA (7a ed.)

ebrary, Inc. (1987). Directions in engineering research: An assessment of opportunities and needs. National Academy Press.

Cita Chicago Style (17a ed.)

ebrary, Inc. Directions in Engineering Research: An Assessment of Opportunities and Needs. Washington, D.C.: National Academy Press, 1987.

Cita MLA (9a ed.)

ebrary, Inc. Directions in Engineering Research: An Assessment of Opportunities and Needs. National Academy Press, 1987.