Bibliografi hlm. 164-165
IAB 370
Bibliografi hlm. 164-165WTP 371.2
Bibliografi hlm. 221-224
SAS 370.1CRB 370KDR 370.1WSS 370SUSKA 370.1PLK 370MTR 370.1
Bibliografi : hlm.221-224
Bibilografi hlm. 195-197
Bibl:hlm.221-224
SKY 370.15 PUR pPLK 370.15CRB 370.15KDR 370.15WSS 370.15SUSKA 370WTP 370.15AMB 370.15MTR 370.15
Bibilografi hlm. 176-177
CRB 370KDR 370.1WSS 370SUSKA 370.1PLK 370
Bibliografi: P 195-197
CRB 371.3IAB 410