Author：
Jennifer Dykema, John Stevenson, Lisa Klein, Yujin Kim & Brendan Day

Year：
2013

References：
Effects of E-Mailed Versus Mailed Invitations and Incentives on Response Rates, Data Quality, and Costs in a Web Survey of University Faculty

Link：
Click here

Publication：
Social Science Computer Review, 2013, Volume 31, Issue 3, pp. 359 - 370