Hyman, David N.
Study guide for use with economics
Richard D. Irwin, 1971
 Buku Teks SO
Leftwich, Richard H.
Study guide to accompany economics of sosial issues
United States of America, 1984
 Buku Teks SO
Lind, Douglas A.
Study guide for use with statistical techniques in business and economics
McGraw-Hill-Irwin, 2010
 Buku Teks
Sharp, Ansel M.
Economics of social issues
McGraw-Hill, 2002
 Buku Teks SO
Sharp, Ansel M.
Economics of social issues
Richard D. Irwin, 1990
 Buku Teks SO