No. Inv. : 146437-146438/P/Perp/15/2c
No Inv.: 1566/P/Perp/92/1c
Bibliografi : hlm. 272-276
No. Inv. : 146052/S/Perp/15/1c
Judul asli : "Managing The Human Resource"
No Inv.: 448-451/S/Perp/94/4c
Jilid 1 : "The Rise of the Middle Classes", jilid 2 : "The Rise of the Working Classess", jilid 3 : "A Century of Social Reform", jilid 4 : "The Age of Affluence"
No Inv.: 564/P/Perp/92/1c
No Inv.: 335-336/P/Perp/95/2c