Bibl:hlm.224
Bibl:hlm.443-450Indeks:hlm.465-478
Bibl: 203-205
Bibl: hlm. 183-184
Bibl:hlm.377-379
Bibl:hlm. 425-427
Bibl: hlm. 279-280
Bibl:hlm.189-191
CRB 2X7.3KDR 2X7.3IAB 2X7.3
SKY 371.422CRB 371.4KDR 370WSS 372.4SUSKA 370
Bibl 325-329 hlm.Indeks 330-335 hlm.
Bibliografi hlm. 133-134indeks hlm. 135-139
Bibliografi: 190;; Indeks: 188
Bibilografi hlm. 201-204
bibliografi: hlm 223-229
Bibilografi hlm. 189-192
Bibl hlm.370
Bibliografi: p.183-184
Bibliografi:hlm.290
Bibiliografi: hlm219-223
Bibl: hlm. 193-199, Indeks; hlm. 201-205
Bibl: hlm. 305-310 / Indeks; hlm. 311-319
Indeks 505-506 hlm; Introduction to Research in Education