Neuman, William Lawrence, 1950-, author
Pearson/Allyn and Bacon, 2006
Buku Teks
Neuman, Lawrence W., author
Pearson New International edition, 2014
Buku Teks
McGraw-Hill, 2012
Buku Teks
Palys, T.S. (Theodore Stephen), author
Nelson Education, 2014
Buku Teks
Tashakkori, Abbas, author
Sage, 1998
Buku Teks