question re using citations

[KIVIKKO@GAMMA.IS.TCU.EDU]

Group,

With increasing frequency, students from a varity of disciplines bring 
papers to the center with no citations for information gathered from 
secondary sources.  When I ask about the absence of citations, these 
students say they are required to have only a "bibliography" page at 
the end.  I feel compelled to tell them they're being academically 
dishonest and urge them to check again with their professors.  Most 
students are vehement in the assertion that citations aren't required.  
Often the students have actually quoted passages using quotation marks; 
sometimes, though, the prose sounds more academic in certain places than 
in others, yet no quotation marks are present.  When I ask about 
"paraphrasing," students say, "Yes, I changed it up."

I don't want to be a party to plagiarism; but pressing students about 
such matter sreally aggravates many of them.  Have any of you encountered 
these situations with any consistency?  What do you consider our duty as 
writing center professionals?    

Mary Nell Kivikko
M.Kivikko@tcu.edu