Bibl.hlm. 423-428, Ind.hlm 429-435
Bibl.hlm.327-330
Ind. hlm. 317 - 320
Bibl. Hlm. 205
Realistic educational planning
Bibl. : hlm. 112-113
Bibl.hlm.121-123
Bibl. : 35 hlm. Referens : 33-34
Indeks. hlm. 45-46
Bibl. hlm. 469-488
Bibl. hlm. 291-221
SHJ 956.94 054
Bibl.hlm.270-279Ind.hlm.280-288
Ind.hlm.397-433
Ind.hlm.145-158
Bib;. Hlm. 5563-571Ind. Hlm. 572-590
Vol.ix-x. C.1-2
Bibl.hlm.149-159Ind. hlm.163-165
Ind.hlm.324-330
Bibl.hlm.41-47
Bibl.hlm. 239-253, ind.hlm. 257-273
Bibl. hal.231 - 233