ebrary, Inc, Greenberg, J. S., & Hertzfeld, H. (1992). Space economics. American Institute of Aeronautics and Astronautics.
芝加哥风格引文ebrary, Inc, Joel S. Greenberg, 与 Henry Hertzfeld. Space Economics. Washington, D.C.: American Institute of Aeronautics and Astronautics, 1992.
MLA引文ebrary, Inc, et al. Space Economics. American Institute of Aeronautics and Astronautics, 1992.
警告：这些引文格式不一定是100％准确.