Fulmer, Robert M., author
Macmillan, 1974
Buku Teks
Fulmer, Robert M., author
Macmillan, 1978
Buku Teks
Churchill Livinstone , 2000
Buku Teks
by Joseph Grenny ... [and others]
McGraw-Hill Education, 2013
Buku Teks
Albrecht, Karl, 1941-, author
Jossey-Bass, 2006
Buku Teks