University of Illinois at Urbana-Champaign, & Office of Engineering Publications. (1960). The summary of engineering research, 1991. Urbana: Office of Engineering Publications, College of Engineering, University of Illinois at Urbana-Champaign.
استشهاد بنمط شيكاغوUniversity of Illinois at Urbana-Champaign, و Office of Engineering Publications. The Summary of Engineering Research, 1991. Urbana: Office of Engineering Publications, College of Engineering, University of Illinois at Urbana-Champaign, 1960.
MLA استشهادUniversity of Illinois at Urbana-Champaign, و Office of Engineering Publications. The Summary of Engineering Research, 1991. Urbana: Office of Engineering Publications, College of Engineering, University of Illinois at Urbana-Champaign, 1960.