The phrase "additional sources of information" is correct and usable in written English.
You can use it when referring to extra materials or references that provide more details or context on a subject.
Example: "For a deeper understanding of the topic, please consult the additional sources of information provided at the end of the report."
Alternatives: "further information sources" or "extra information resources".
Focus group participants also expressed trust in their rheumatologist, but regularly sought additional sources of information (primarily from online sources) in order to make informed treatment decisions.
They then need to use other resources (Civics, American History, or Economics text books; computers with Internet access) to find at least two additional sources of information on their party's Social Security opinions.
(See sidebar 2 for additional sources of information).
"We need many additional sources of information to be able to put these changes in context.
Beyond this, document analysis and relevant data banks (Eurydice, Eurostat, OECD) were used as additional sources of information.
Analyses for the Aceh Earthquake and Cyclone Phailin used only information found on ReliefWeb, while the Pakistan Earthquake and Bohol Earthquake used additional sources of information.
However, this temporal-based approach can be advantageous even if we have richer information on the network since it provides additional sources of information for link inference.
This could be considered an indication that, in fact, hybrid techniques which combine additional sources of information tend to perform better than their predecessors do.
Articles returned by these searches were reviewed for relevance to the subject of this review, and the reference lists of other pertinent review articles and guidelines documents were examined for additional sources of information, such as congress abstracts.
Methods On 22.11.2015, all CCU staff on duty were asked to complete a questionnaire, and to do so without reference to additional sources of information (eg noticeboards, colleagues and websites).
