ebrary, Inc. (1990). Fostering flexibility in the engineering work force. National Academy Press.
芝加哥风格引文ebrary, Inc. Fostering Flexibility in the Engineering Work Force. Washington, D.C.: National Academy Press, 1990.
MLA引文ebrary, Inc. Fostering Flexibility in the Engineering Work Force. National Academy Press, 1990.
警告：这些引文格式不一定是100％准确.