Bjelland, H. (1992). Using online scientific & engineering databases. Windcrest.
芝加哥风格引文Bjelland, Harley. Using Online Scientific & Engineering Databases. Blue Ridge Summit, PA: Windcrest, 1992.
MLA引文Bjelland, Harley. Using Online Scientific & Engineering Databases. Windcrest, 1992.
警告：这些引文格式不一定是100％准确.