Previous ed.: published as by O.C. Ferrell. Boston, Mass.; London: McGraw-Hill/Irwin, 2006, bibliografi dan indeks Terdapat 2 kopi
"Originally published : The secret to developing peak performers. Shawnee Mission, Kan. : National Press Publications, c1999.Bibliografi, indeks (Terdapat 2 kopi)"
Indeks
Bibliografi dan indeks
Bibliografi dan Indeks