APA
Henn M., Weinstein M. & Foard N. (2009). A Critical Introduction to Social Research. : Sage Publishers.
Chicago
Henn Matt, Weinstein Mark and Foard Nick. 2009. A Critical Introduction to Social Research. : Sage Publishers.
Harvard
Henn M., Weinstein M. and Foard N. (2009). A Critical Introduction to Social Research. : Sage Publishers.
MLA
Henn Matt, Weinstein Mark and Foard Nick. A Critical Introduction to Social Research. : Sage Publishers. 2009.