Bibliografi : hlm. 135-136 No Inv.: 135246 /SM/Perp/13/1c
Bibliografi : hlm. 315-316 No Inv.: 135780/SM/Perp/13/1c
Judul asli : "Practical Problem in Soil Mechanics and Foundation Engineering"
Bibliografi : hlm. 177-181
Bibliografi : hlm. 213-214
Bibliografi : hlm. 409-449
Bibliografi : hlm. 339-344