Frank, Frederick S.
Garland Publishing, 1987
Buku Referensi
Saricks, Joyce G.
[American Management Association, ], 2009
eBooks
edited by Arthur Waldhorn, Olga S. Weber, Arthur Zeiger
R.R. Bowker, 1990
Buku Teks
chief editor, Paul Procter
Longman, 1982
Buku Referensi
Pearson Longman, 2006
Buku Referensi