Use the Oracle Software Delivery Cloud (eDelivery) for specific 12.1.3 versions.
Downloading and installing is the most efficient way for developers to set up a complete Service-Oriented Architecture (SOA) environment on a single machine. This "all-in-one" installer includes Oracle JDeveloper, an integrated Oracle WebLogic Server, and all necessary SOA components to design and test applications without a full enterprise-grade setup. Where to Download Oracle SOA Suite 12.1.3 QuickStart oracle soa suite 12.1.3 quickstart download
You can find the official distribution on the Oracle SOA Suite Downloads page. Use the Oracle Software Delivery Cloud (eDelivery) for