Bibliografi : hlm. 181-182
Bibliografi : hlm. 380-391
Bibliografi : hlm. 111
Judul asli : "Practical Problem in Soil Mechanics and Foundation Engineering"
No Inv.: 126351-126355/P/Perp/10/5c
No Inv.: 123171-123175/P/Perp/10/5c
No Inv.: 123196-123200/P/Perp/10/5c
No Inv.: 129075/S/Perp/10/1c
Judul asli : "Office Manajemen"