The phrase "information sources" refers to where people can find or get information from. It includes books, websites, libraries, newspapers, experts, and other places where we can learn and gather knowledge. Full definition
Successful commercial brokers have hundreds of information sources at their fingertips surrounding inventory, trends and market conditions. (nar.realtor)
The proposed system would collect data from external information sources on cryptocurrency exchange rates, and use this data to establish its own optimal rate. (links2exchange.net)
Clients and prospects are advised to carefully consider the opinions and analysis offered in the blogs or other information sources in the context of the client or prospect's individual analysis and decision making. (econotimes.com)