Erickson, Bonnie H.
Understanding data : an introduction to exploratory and confirmatory data analysis for students in the social sciences
Open University Press, 1977
 Buku Teks
Understanding korean politics an introduction
State University of New York Press, 2001
 Buku Teks
Understanding Korean politics: an introduction
Soong Hoom Kil and Chung-in Moon
State University of New York Press, 2001
 Buku Teks
Strenski, Ivan
Understanding theories of religion : an introduction
Wiley Blackwell, 2015
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Understanding democratic politics: an introduction
Sage Publications, 2012
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