Dendermonde, Max
Trap op, Trap af
EM. Querido's Uitgeverij N.V, 1967
 Buku Teks
Cooley, Leland Frederick
The retirement trap
Doubleday & Company, Inc, 1965
 Buku Teks
Puzo, Mario
Fools die : a novel / by Mario Puzo
Putnam, 1978
 Buku Teks
Hare, Bill
Celebration of fools: an inside look at the rise and fall of JCPenney
[American Management Association, ], 2004
 eBooks
Porter, Katherine Anne
Ship of fools /​ Katherine Anne Porter
Secker &​ Warburg, 1962
 Koleksi Publik