Magstadt, Thomas M., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Magstadt, Thomas M., author
Cengage Learning, 2017
Buku Teks
Fowler, Robert Booth, author
Praeger, 1985
Buku Teks
Ebenstein, William, author
Holt, Rinehart and Winston, 1962
Buku Teks
Lipson, Leslie, author
Prentice-Hall, 1954
Buku Teks