Dunckel, Jacqueline
Self-Counsel, 1984
Koleksi Publik
Whitw
Buku Teks
Rae, Leslie
Bhuana Ilmu Populer, 2005
Buku Teks
Wircenski, Jerry L.
[American Society for Training and Development Press, American Society for Training and Development Press], 2005
eBooks
White, Edward T.
Architectural Media, 1977
Buku Teks