George, Thomas F
Prentice-Hall, 1987
Buku Teks
Brown, Robert F., author
Wadsworth, 1980
Buku Teks
Korth, Hoinz
Verlag die Wirschaft, 1972
Buku Teks
Bowen, Earl K., author
Richard D. Irwin, 1963
Buku Teks
Bowen, Earl K., author
Richard D. Irwin, 1967
Buku Teks