Cisco OSPF Command and Configuration Handbook (paperback)

Section 6-1.   distance administrative-distance

Section 6-2.   distance administrative-distance source-ip-address source-ip-mask

Section 6-3.   distance administrative-distance source-ip-address source-ip-mask access-list-number

Section 6-4.   distance ospf external administrative-distance

Section 6-5.   distance ospf inter-area administrative-distance

Section 6-6.   distance ospf intra-area administrative-distance