5Krikelas J. Information seeking behavior: patterns and concepts [ J ]. Drexel Library Quarterly, 1983, ! 9 . 7.
6Wilson T D. Human informationbehavior[ J]. Information sci- ence,2000,3(2) : 49-55.
7Case D C. Looking for information. A survey of research on in- formation seeking, needs, and behavior [M]. UK: Emerald Group Publishing Limited, 2008.
8Holland M P, Powell C K. A longitudinal survey of the informa- tion seeking and use habits of some engineers[J] . College and Research Libraries, 1995, 55( 1 ) : 7-15.
9Saks A M, Ashforth B E. A Longitudinal Investigation of the rela- tionships between job information sources, applicant perceptions of fit, and work outcomes[J]. Journal of Vocational Behavior, 1997,50 ( 2 ) : 395-426.
10Gertsberger P G, Allen T J. Criteria Used by Research and De- velopment Engineers in the Selection of an Information Source [J]. Journal of Applied Psychology, 1968,52.
