ebrary, Inc. (1987). Directions in engineering research: An assessment of opportunities and needs. National Academy Press.
Citazione stile Chigago Style (17a edizione)ebrary, Inc. Directions in Engineering Research: An Assessment of Opportunities and Needs. Washington, D.C.: National Academy Press, 1987.
Citatione MLA (9a ed.)ebrary, Inc. Directions in Engineering Research: An Assessment of Opportunities and Needs. National Academy Press, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.