Tobias Just, Wolfgang Maennig, editors
[Springer, ], 2012
eBooks
Dipasquale, Denise, author
Prentice-Hall, 1996
Buku Teks
Shilling, James D., author
South-Western, 2002
Buku Teks
Kau, James B., author
McGraw-Hill, 1985
Buku Teks
Brueggeman, William B., author
Richard D. Irwin, 1997
Buku Teks