Bibliografi : hlm. 231-239
No Inv.: 109405/S/Perp/07/1c~120938/SM/Perp/09/1c~127002-127006/P/Perp/10/5c
Judul asli : "Sampling Techniques"
Bibliografi : hlm. 311-312 No Inv.: 144138, 140677/S/Perp/14/2c
Bibliografi : hlm. 165-171
No Inv.: 1192-1211/Perp/89/20c
No. Inv. : 146180-146181/P/Perp/15/2c
Bibliografi : hlm. 183-184