No Inv.: 129678/SM/Perp/11/1c
No Inv.: 115521/SM/Perp/08/1c
No Inv.: 209/PSM/Perp/98/1c~111614-111618/P/Perp/07/5c
No Inv.: 688-692/P/Perp/94/5c
Bibliografi : hlm. 173-181 No Inv.: 138962-138963/P/Perp/2c
No Inv.: 135925 /SM/Perp/13/1c
No Inv.: 110089/PSM/Perp/07/1c
No Inv.: 115510/SM/Perp/08/1c
Judul asli : "Sampling Techniques"