DILLMAN, Don A. - SMYTH, Jolene D. - CHRISTIAN, Leah Melani. Internet, mail, and mixed-mode surveys : the tailored design method. 3rd ed. Hoboken : John Wiley & Sons, 2009. 499 s. ISBN 978-0-471-69868-5. [Copy count : 1, currently available 1, at library only 0]