Evenson, Ren`ee
Amacom, 2005
Buku Teks SO
Evenson, Renee, 1951-
American Management Association, 2011
eBooks
Evenson, Renee, 1951-
American Society for Training and Development, 2005
eBooks
Geddes-Brown, Leslie
Page One, 2000
Buku Referensi
Brookes, John
Ward Lock, 1996
Buku Referensi