Abstract: Provided are systems, methods, and computer program products for inserting citations into a textual document. The method includes receiving a first user input identifying a portion of a textual document, generating a plurality of predicted citations based on comparing at least one string in the textual document associated with the portion of the textual document to at least a subset of source documents of a plurality of source documents with a model selected from a plurality of models based on the at least one string, each predicted citation of the plurality of predicted citations corresponding to at least one source document of the plurality of source documents, displaying, on a graphical user interface, the plurality of predicted citations, and inserting a predicted citation of the plurality of predicted citations into the portion of the textual document based on a second user input.