Budnick, Frank S., author
Richard D. Irwin, 1977
Buku Teks
Phillips, Don T., author
John Wiley & Sons, 1976
Buku Teks SO
edited by Joseph F. McCloskey, Florence N. Trefethen
John Hopkins Press, 1954
Buku Teks
Sri Mulyono, author
Lembaga Penerbit Fakultas Ekonomi Universitas Indonesia, 1991
Buku Teks
Prentice-Hall, 1991
Buku Teks