Seglin, Jeffrey L., 1956-, author
Amacom, 2012
Buku Teks
Seglin, Jeffrey L., author
[American Management Association, American Management Association], 2002
eBooks
Merriam-Webster's, Incorporated, 1993
Buku Referensi
Hutabarat, Roselyne, author
Erlangga, 2009
Buku Teks
Seglin, Jeffrey L., author
[American Management Association;;;, ], 2012
eBooks